| Argentina | 
            Merck S.A. | 
            Tronador 4890; Panamericana Plaza Building | 
            C1430DNN | 
              | 
            Buenos Aires | 
        
        
            | Argentina | 
            Sigma-Aldrich de Argentina S.R.L. | 
            Tronador 4890; Panamericana Plaza Building | 
            C1430DNN | 
              | 
            Buenos Aires | 
        
        
            | Australia | 
            Merck Pty. Ltd. | 
            Ground Floor, Building 1, 885 Mountain Highway | 
            VIC 3153 | 
              | 
            Bayswater | 
        
        
            | Australia | 
            SAFC Biociences Pty. Ltd. | 
            12 Anella Avenue | 
            2154 | 
              | 
            Castle Hill | 
        
        
            | Australia | 
            Sigma-Aldrich Pty. Ltd. | 
            12 Anella Avenue | 
            2154 | 
              | 
            Castle Hill | 
        
        
            | Austria | 
            Merck Chemicals and Life Science GesmbH | 
            Zimbagasse 5 | 
            1147 | 
              | 
            Vienna | 
        
        
            | Austria | 
            Sigma-Aldrich Handels GmbH | 
            Marchettigasse 7/2 | 
            1060 | 
              | 
            Vienna | 
        
        
            | Belgium | 
            Merck Chemicals N.V./S.A. | 
            Brusselsesteenweg 288 | 
            3090 | 
              | 
            Overijse | 
        
        
            | Belgium | 
            Sigma-Aldrich BVBA/SPRL | 
            Brusselsesteenweg 288 | 
            3090 | 
              | 
            Overijse | 
        
        
            | Brazil | 
            Merck S.A. | 
            Estrada dos Bandeirantes 1099 | 
            22710-571 | 
              | 
            Rio de Janeiro | 
        
        
            | Brazil | 
            Sigma-Aldrich Brasil Ltda. | 
            Avenida das Nacoes Unidas 23043, Vila Almeida | 
            04795-100 | 
              | 
            Sao Paulo | 
        
        
            | Bulgaria | 
            Merck Bulgaria EAD | 
            48 Sitnyakovo Blvd., Serdika Offices, 6th Floor | 
            1505 | 
              | 
            Sofia | 
        
        
            | Canada | 
            EMD Chemicals Canada Inc. | 
            100 King Street West, 1 First Canadian Place, Suite 1600 | 
            M5X 1G5 | 
            ON | 
            Toronto | 
        
        
            | Canada | 
            Millipore (Canada) Ltd. | 
            100 King Street West, 1 First Canadian Place, Suite 1600 | 
            M5X 1G5 | 
            ON | 
            Toronto | 
        
        
            | Canada | 
            Natrix Separations, Inc. | 
            5295 John Lucas Drive, Unit 6, Ontario | 
            L7L 6A8 | 
            ON | 
            Burlington | 
        
        
            | Canada | 
            Sigma-Aldrich Canada Co. | 
            2149 Winston Park Drive | 
            L6H 6J8 | 
            ON | 
            Oakville | 
        
        
            | Chile | 
            Merck S.A. | 
            Francisco de Paula Taforó 1981 | 
            778-0349 | 
              | 
            Santiago de Chile | 
        
        
            | Chile | 
            Sigma-Aldrich Quimica Ltda. | 
            Francisco de Paula Taforó 1981 | 
            778-0349 | 
              | 
            Santiago de Chile | 
        
        
            | China | 
            Beijing Skywing Technology Co., Ltd. | 
            No. 11 Bai Fu Quan Road, Science and Technology Park, Changping District | 
            - | 
              | 
            Beijing | 
        
        
            | China | 
            Merck Chemicals (Shanghai) Co., Ltd. | 
            Room 908, No. 1 Ji Long Road, WGQ Free Trade Zone, Pudong | 
            200131 | 
              | 
            Shanghai | 
        
        
            | China | 
            Merck Life Science Technologies (Nantong) Co., Ltd. | 
            Room 442, No. 42 Guangzou Road, Nantong Economic and Technological Development Zone, Jiangsu | 
            - | 
              | 
            Nantong | 
        
        
            | China | 
            Merck Management Consulting (Shanghai) Co., Ltd. | 
            Building 2, No. 428, Sanbang Road, Songjiang District | 
            - | 
              | 
            Shanghai | 
        
        
            | China | 
            Sigma-Aldrich (Shanghai) Trading Co., Ltd. | 
            509 Renqing Road, Zhangjiang High Tech East Park, Pudong | 
            201201 | 
              | 
            Shanghai | 
        
        
            | China | 
            Sigma-Aldrich (Wuxi) Life Science & Technology Co., Ltd. | 
            99 Xi Mei Road, Wuxi New District | 
            214028 | 
              | 
            Wuxi | 
        
        
            | Colombia | 
            Merck S.A. | 
            Av. Carrera 9, No. 101-67, 5th floor, Room 501A | 
            - | 
              | 
            Bogota | 
        
        
            | Croatia | 
            Merck d.o.o. | 
            Ulica Andrije Hebranga 32-34 | 
            10000 | 
              | 
            Zagreb | 
        
        
            | Czech Republic | 
            Merck spol.s.r.o. | 
            Na Hrebenech II. 1718/10 | 
            14000 | 
              | 
            Prague | 
        
        
            | Czech Republic | 
            Sigma-Aldrich spol.s.r.o. | 
            Na Hrebenech II. 1718/10 | 
            14000 | 
              | 
            Prague   | 
        
        
            | Denmark | 
            Merck Life Science A/S | 
            Vandtarnsvej 62 A, 5.A. | 
            2860 | 
              | 
            Soborg | 
        
        
            | Denmark | 
            Sigma-Aldrich Denmark ApS | 
            Vandtarnsvej 62 A, 5.A. | 
            2860 | 
              | 
            Soborg | 
        
        
            | Finland | 
            Merck Life Science OY | 
            Keilaranta 6 | 
            02150 | 
              | 
            Espoo | 
        
        
            | Finland | 
            Sigma-Aldrich Finland OY | 
            Keilaranta 6 | 
            02150 | 
              | 
            Espoo | 
        
        
            | France | 
            BioControl Systems S.a.r.l. | 
            31 Rue Laure Diebold | 
            69009 | 
              | 
            Lyon | 
        
        
            | France | 
            Merck Biodevelopment S.A.S. | 
            37 Rue Saint Romain | 
            69008 | 
              | 
            Lyon | 
        
        
            | France | 
            Merck Chimie S.A.S. | 
            201 Rue Carnot | 
            94126 | 
              | 
            Fontenay s/Bois | 
        
        
            | France | 
            Millipore S.A.S.. | 
            39, Route Industrielle de la Hardt | 
            67120 | 
              | 
            Molsheim | 
        
        
            | France | 
            Sigma-Aldrich Chimie S.a.r.l. | 
            80 Rue de Luzais, L´Isle D´Abeau, Chesnes B.P. 701 | 
            38297 | 
              | 
            Saint Quentin Fallavier | 
        
        
            | Germany | 
            Biochrom GmbH | 
            Leonorenstrasse 2-6 | 
            12247 | 
              | 
            Berlin | 
        
        
            | Germany | 
            Merck Chemicals GmbH | 
            Feldbergstrasse 80 | 
            64293 | 
              | 
            Darmstadt | 
        
        
            | Germany | 
            Merck KGaA | 
            Frankfurter Strasse 250 | 
            64293 | 
              | 
            Darmstadt | 
        
        
            | Germany | 
            Merck Life Science Germany GmbH | 
            Frankfurter Strasse 250 | 
            64293 | 
              | 
            Darmstadt | 
        
        
            | Germany | 
            Merck Life Science GmbH | 
            Lilienthalstrasse 16 | 
            69214 | 
              | 
            Eppelheim | 
        
        
            | Germany | 
            Sigma-Aldrich Biochemie GmbH | 
            Riedstrasse 2 | 
            89555 | 
              | 
            Steinheim | 
        
        
            | Germany | 
            Sigma-Aldrich Chemie GmbH | 
            Riedstrasse 2 | 
            89555 | 
              | 
            Steinheim | 
        
        
            | Germany | 
            Sigma-Aldrich Produktions GmbH | 
            Riedstrasse 2 | 
            89555 | 
              | 
            Steinheim | 
        
        
            | Greece | 
            Merck A.E. | 
            41-45 Kifisias Ave., Building B | 
            15123 | 
              | 
            Maroussi, Athens | 
        
        
            | Greece | 
            Sigma-Aldrich (OM) Ltd. | 
            26 Adrianoupoleos str. Ilioupoli | 
            10444 | 
              | 
            Athens | 
        
        
            | Guatemala | 
            Merck, S.A. | 
            12 Avenida 0-33 Zona 2 de Mixco | 
            01002 | 
              | 
            Guatemala City | 
        
        
            | Hong Kong | 
            Merck Ltd. | 
            Unit 601-02 Li Po Chun Chambers, 189 Des Voeux Road | 
            - | 
              | 
            Hong Kong | 
        
        
            | Hungary | 
            Merck Kft. | 
            Október huszonharmadika utca 6-10 | 
            1117 | 
              | 
            Budapest | 
        
        
            | Hungary | 
            Sigma-Aldrich Kft. | 
            Október huszonharmadika utca 6-10 | 
            1117 | 
              | 
            Budapest | 
        
        
            | India | 
            Merck Life Science Pvt. Ltd. | 
            Godrej One, 8th floor, Pirojshanagar, Eastern Express Highway, Vikhroli E | 
            400079 | 
              | 
            Mumbai | 
        
        
            | India | 
            Merck Ltd. | 
            Godrej One, 8th floor, Pirojshanagar, Eastern Express Highway, Vikhroli E | 
            400079 | 
              | 
            Mumbai | 
        
        
            | India | 
            Sigma-Aldrich Chemicals Private Limited | 
            Plot No. 12, Bommasandra Jigani Link Road, Indutrial Area, Anekal Taluk | 
            560100 | 
              | 
            Bangalore | 
        
        
            | Indonesia | 
            P.T. Merck Chemicals and Life Sciences | 
            PP Plaza 4th floor, JL. TB. Simatupang 57 | 
            13760 | 
              | 
            Jakarta | 
        
        
            | Indonesia | 
            P.T. Merck Tbk. | 
            JL.T.B.Simatupang No. 8 Pasar Rebo | 
            13760 | 
              | 
            Jakarta | 
        
        
            | Ireland | 
            Merck Millipore Ltd. | 
            Tullagreen | 
            - | 
              | 
            Carrigtwohil | 
        
        
            | Ireland | 
            Sigma-Aldrich Ireland Ltd. | 
            Vale Road, Ballyraine | 
            24 | 
              | 
            Arklow | 
        
        
            | Israel | 
            Sigma-Aldrich Israel Ltd. | 
            3 Plaut Street, Rabin Park | 
            76100 | 
              | 
            Rehovot | 
        
        
            | Italy | 
            Merck S.p.A. | 
            Via Monte Rosa 93 | 
            20149 | 
              | 
            Milan  | 
        
        
            | Italy | 
            Sigma-Aldrich S.r.l. | 
            Via Monte Rosa 93 | 
            20149 | 
              | 
            Milan  | 
        
        
            | Japan | 
            BioReliance KK | 
            Arco Tower 4F, 1-8-1, Shimomeguro 1-chome, Meguro-ku | 
            153-8927 | 
              | 
            Tokyo | 
        
        
            | Japan | 
            Merck Ltd. | 
            Arco Tower 4F, 1-8-1, Shimomeguro 1-chome, Meguro-ku | 
            153-8927 | 
              | 
            Tokyo | 
        
        
            | Japan | 
            Sigma-Aldrich Japan G.K. | 
            Arco Tower 4F, 1-8-1, Shimomeguro 1-chome, Meguro-ku | 
            153-8927 | 
              | 
            Tokyo | 
        
        
            | Malaysia | 
            Merck Sdn Bhd | 
            Level 8, Symphony House, Block D13, Pusat Dagangan Dana 1, Jalan PJU 1A/46, Selangor Darul Ehsan | 
            47301 | 
              | 
            Petaling Jaya | 
        
        
            | Malaysia | 
            Sigma-Aldrich (M) Sdn Bhd | 
            Level 7, Menara Milenium, Jalan Damanlela, Pusat Bandar Damansara, Damansara Heights | 
            50490 | 
              | 
            Kuala Lumpur | 
        
        
            | Mexico | 
            Merck, S.A. de C.V. | 
            Calle 5 No. 7 Fracc. Ind. Alce Blanco, Naucalpan de Juarez | 
            53370 | 
              | 
            Mexico City | 
        
        
            | Mexico | 
            Sigma-Aldrich Quimica, S. de R.L. de C.V. | 
            Calle 6 Norte no. 107, Parque Industrial | 
            50200 | 
              | 
            Toluca | 
        
        
            | Netherlands | 
            BioControl Systems B.V. | 
            Hoofdweg-Noord 41 | 
            2913LB | 
              | 
            Nieuwerkerk Ad Ijssel | 
        
        
            | Netherlands | 
            Sigma-Aldrich Chemie N.V. | 
            Stationsplein 4, Postbus 27 | 
            3330 AA | 
              | 
            Zwijndrecht | 
        
        
            | New Zealand | 
            Merck Ltd. | 
            251 Broadway Avenue | 
            4440 | 
              | 
            Palmerston North | 
        
        
            | New Zealand | 
            Sigma-Aldrich New Zealand Co. | 
            Nexia New Zealand P/L chartered Accountants, level 4, 123 Victoria street | 
            8140 | 
              | 
            Christchurch | 
        
        
            | Nigeria | 
            Merck Pharmaceutical and Life Sciences Ltd. | 
            5th floor, Ibukun House, 70 Adetokunbo Ademola Way, Victoria Island | 
            - | 
              | 
            Lagos | 
        
        
            | Norway | 
            Merck Life Science AS | 
            Drammensveien 123, 5th floor | 
            0277 | 
              | 
            Oslo | 
        
        
            | Norway | 
            Sigma-Aldrich Norway AS | 
            Drammensveien 123, 5th floor | 
            0277 | 
              | 
            Oslo | 
        
        
            | Panama | 
            Mesofarma Corporation | 
            Edificio Arango-Orillac, Calle 54 Este | 
            - | 
              | 
            Panama City | 
        
        
            | Peru | 
            Merck Peruana S.A. | 
            Av. Los Frutales 220 | 
            3 | 
              | 
            Lima | 
        
        
            | Philippines | 
            Merck Inc. | 
            24th Floor, GT Tower International, 6813,Ayala Avenue cor dela Rosa | 
            1227 | 
              | 
            Makati City | 
        
        
            | Poland | 
            Merck Sp.z.o.o. | 
            Al. Jerozolimskie 142B | 
            02-305 | 
              | 
            Warsaw | 
        
        
            | Poland | 
            Sigma-Aldrich Sp.z.o.o. | 
            Szelagowska 30 | 
            61-626 | 
              | 
            Poznan | 
        
        
            | Portugal | 
            Merck, S.A. | 
            Edificio Duo Miraflores, Alameda Fernao Lopes, 12 - 4°B | 
            1495-190 | 
              | 
            Algés | 
        
        
            | Romania | 
            Merck Romania S.R.L. | 
            Sector 2, Gara Herastrau Street Nr. 4D, Building C, 6th floor | 
            20334 | 
              | 
            Bucharest | 
        
        
            | Russian Federation | 
            Sigma-Aldrich Rus LLC | 
            Valovaya street, 35 | 
            115054 | 
              | 
            Moscow | 
        
        
            | Singapore | 
            Merck Pte. Ltd. | 
            2 Science Park Drive, Ascent Building, #05-01/12 | 
            118222 | 
              | 
            Singapore | 
        
        
            | Singapore | 
            Sigma-Aldrich Pte. Ltd. | 
            2 Science Park Drive, Ascent Building, #05-01/12 | 
            118222 | 
              | 
            Singapore | 
        
        
            | Slovenia | 
            Merck d.o.o. | 
            Letaliska cesta 29C | 
            1000 | 
              | 
            Ljubljana | 
        
        
            | South Africa | 
            Merck (Pty) Ltd. | 
            1 Friesland Drive, Longmeadow Business Estate | 
            1645 | 
              | 
            Modderfontein | 
        
        
            | South Africa | 
            Sigma-Aldrich (Pty) Ltd. | 
            17 Pomona Street, Aviation Park, Unit 4 | 
            1619 | 
              | 
            Kempton Park | 
        
        
            | South Korea | 
            Merck Ltd. | 
            15.Floor Haesung-2-Bldg, Teheran-Ro 508, Gangnam-gu | 
            135-725 | 
              | 
            Seoul | 
        
        
            | South Korea | 
            Sigma-Aldrich Korea Ltd. | 
            698-84 Maeng-ri, Cheoin-gu, Wonsam-myun | 
            449-871 | 
              | 
            Yongin City | 
        
        
            | Spain | 
            Merck Chemicals and Life Science S.A.U. | 
            Calle Maria de Molina 40 | 
            28006 | 
              | 
            Madrid | 
        
        
            | Spain | 
            Sigma-Aldrich Quimica S.L. | 
            Calle Maria de Molina 40 | 
            28006 | 
              | 
            Madrid | 
        
        
            | Sweden | 
            Merck Chemicals and Life Science AB | 
            Frösundaviks Allé 1 | 
            16970 | 
              | 
            Solna | 
        
        
            | Sweden | 
            Sigma-Aldrich Sweden AB | 
            Solkraftsvagen 14C | 
            13570 | 
              | 
            Stockholm | 
        
        
            | Switzerland | 
            Merck & Cie | 
            Weisshausmatte | 
            6460 | 
              | 
            Altdorf | 
        
        
            | Switzerland | 
            Sigma-Aldrich Chemie GmbH | 
            Industriestrasse 25 | 
            9471 | 
              | 
            Buchs | 
        
        
            | Switzerland | 
            Sigma-Aldrich International GmbH | 
            Wassergasse 7 | 
            9000 | 
              | 
            St. Gallen | 
        
        
            | Switzerland | 
            Sigma-Aldrich Production GmbH | 
            Industriestrasse 25 | 
            9471 | 
              | 
            Buchs | 
        
        
            | Taiwan | 
            Merck Ltd. | 
            6F, No. 89, Section 2, Ti-Ding Boulevard | 
            114 | 
              | 
            Taipei | 
        
        
            | Thailand | 
            Merck Ltd. | 
            19th Fl., 622 Emporium Tower, Sukhumvit Road, Klongton, Klongtoey | 
            10110 | 
              | 
            Bangkok | 
        
        
            | United Kingdom | 
            BioControl Systems Limited | 
            16 Great Queen Street, Covent Garden | 
            WC2B 5AH | 
              | 
            London | 
        
        
            | United Kingdom | 
            BioReliance Limited | 
            13 Queens Road | 
            AB15 4YL | 
              | 
            Aberdeen | 
        
        
            | United Kingdom | 
            Merck Chemicals Ltd. | 
            Boulevard Industrial Park, Padge Road | 
            NG9 2JR | 
              | 
            Nottingham | 
        
        
            | United Kingdom | 
            Millipore (U.K.) Ltd. | 
            Bedfont Cross, Stanwell Road | 
            TW14 8NX | 
              | 
            Feltham | 
        
        
            | United Kingdom | 
            SAFC Biosciences Limited | 
            The Old Brickyard, New Road | 
            SP8 4XT | 
              | 
            Gillingham | 
        
        
            | United Kingdom | 
            SAFC Hitech Limited | 
            The Old Brickyard, New Road | 
            SP8 4XT | 
              | 
            Gillingham | 
        
        
            | United Kingdom | 
            Sigma-Aldrich Company Limited | 
            The Old Brickyard, New Road | 
            SP8 4XT | 
              | 
            Gillingham | 
        
        
            | USA | 
            Aldrich Chemical Co. LLC | 
            6000 N Teutonia | 
            53209 | 
            WI | 
            Milwaukee | 
        
        
            | USA | 
            Aldrich-APL, LLC | 
            1302 W. Anthony Drive | 
            61802 | 
            IL | 
            Urbana | 
        
        
            | USA | 
            BioControl Systems International, Inc. | 
            1191 2d Ave., Suite #1800 | 
            98101 | 
            WA | 
            Seattle | 
        
        
            | USA | 
            BioControl Systems, Inc. | 
            c/o Corporation Serivce Company, 2711 Centerville Road, Suite 400 | 
            19808 | 
            DE | 
            Wilmington | 
        
        
            | USA | 
            BioReliance Corporation | 
            14920 Broschart Road | 
            20850 | 
            MA | 
            Rockville | 
        
        
            | USA | 
            Cell Marque Corporation | 
            6600 Sierra College Blvd | 
            95677 | 
            CA | 
            Rocklin | 
        
        
            | USA | 
            Cerilliant Corporation | 
            811 Paloma Drive, Suite A | 
            78665 | 
            TX | 
            Round Rock | 
        
        
            | USA | 
            EMD Millipore Corporation | 
            400 Summit Drive | 
            01803 | 
            MA | 
            Burlington | 
        
        
            | USA | 
            Grzybowski Scientific Inventions Ltd. | 
            2822 Central Street | 
            60201 | 
            IL | 
            Evenston | 
        
        
            | USA | 
            Nysa Membranes USA, Inc. | 
            26 Revolutionary Road | 
            01720 | 
            MA | 
            Acton | 
        
        
            | USA | 
            Research Organics, LLC | 
            4353 East 49th Street | 
            44125 | 
            OH | 
            Cleveland | 
        
        
            | USA | 
            SAFC Biosciences, Inc. | 
            11296 Renner Blvd | 
            66219 | 
            KS | 
            Lenexa | 
        
        
            | USA | 
            SAFC Carlsbad, Inc. | 
            6211 El Camino Real | 
            92009 | 
            CA | 
            Carlsbad | 
        
        
            | USA | 
            SAFC, Inc. | 
            645 Science Drive | 
            53711 | 
            WI | 
            Madison | 
        
        
            | USA | 
            Sigma-Aldrich Co. LLC | 
            3050 Spruce Street | 
            63103 | 
            MO | 
            St. Louis | 
        
        
            | USA | 
            Sigma-Aldrich Corporation | 
            3050 Spruce Street | 
            63103 | 
            MO | 
            St. Louis | 
        
        
            | USA | 
            Sigma-Aldrich Manufacturing LLC | 
            3050 Spruce Street | 
            63103 | 
            MO | 
            St. Louis | 
        
        
            | USA | 
            Sigma-Aldrich Research Biochemicals, Inc. | 
            1 Strathmore Road | 
            01760 | 
            MA | 
            Natick | 
        
        
            | USA | 
            Sigma-Aldrich RTC, Inc. | 
            2931 Soldier Springs Road | 
            82070 | 
            WY | 
            Laramie | 
        
        
            | USA | 
            Sigma-Aldrich, Inc. | 
            6000 N Teutonia | 
            53209 | 
            WI | 
            Milwaukee | 
        
        
            | USA | 
            Sigma-Genosys of Texas LLC | 
            9186 Six Pines Drive | 
            77380 | 
            TX | 
            The Woodlands | 
        
        
            | USA | 
            Supelco, Inc. | 
            595 N. Harrison Road | 
            16823 | 
            PA | 
            Bellefonte | 
        
        
            | Vietnam | 
            Merck Vietnam Ltd. | 
            9th. Floor; Centre Point; 106 Nguyen Van Troi Street, Phu Nhuan District | 
            - | 
              | 
            Ho Chi Minh City |