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Merck

A5431

Noble agar

Synonym(s):

Gum agar, Agar, Agar-agar

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About This Item

Linear Formula:
(C12H18O9)n
CAS Number:
9002-18-0
UNSPSC Code:
50405901
NACRES:
NA.75
EC Number:
232-658-1
MDL number:
MFCD00081288

Key Documents

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SMILES string

O1[C@@H]([C@@H]([C@@H]([C@H](C1OC2[C@H]3OCC2OC([C@H]3O)C)O)OC)O)CO

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

InChI

1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1

form

powder

Quality Level

200

application(s)

food and beverages
life science and biopharma

Related Categories

General description

Noble agar, also known as agar or agar-agar, is a gelling hydrocolloid extracted from sea weeds such as Gelidium and Gracilaria. It′s structure contains repeating units of D-galactose and 3,6-anhydro-L-galactose, with a few differences, in addition to a low ester sulphate residue. Agarose and agaropectin are the key components of agar. Noble agar is majorly used as both human and animal food supplement. In addition, it is also used in industries for the preparation of solid microbiological media.

Application

Noble agar has been used as a component of growth medium for High grade serous ovarian cancer (HGSOC) cell lines for soft agar colony assay. It has also been used as a media component to culture anaerobic bacteria, Bacteroides thetaitaomicron
Noble agar has been used to make agar gel plates that acts as a standard solid support material:
  • to culture tumor spheroids
  • in lysoplate assay method of Osserman & Lawlor to measure lysozyme concentration in albumen or plasma
  • as BG11 media component to culture Scenedesmus obtusiusculus strains
Originally designed for use in Noble′s cyanide citrate agar.

Preparation Note

Further purified from bacteriological agar with careful specific washings.

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

A5431-250G-PW: + A5431-6X1KG:4548173186276 + A5431-1KG-PW: + A5431-BULK: + A5431-VAR: + A5431-250G:4548173186269 + A5431-1KG:4548173186252

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Certificates of Analysis (COA)

Lot/Batch Number
0000278211
0000278211
SLCM0708
SLCK2677
SLCK2676

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