W326305
L-Cysteine
≥97%, FG
Synonym(s):
(R)-2-Amino-3-mercaptopropionic acid
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About This Item
Linear Formula:
HSCH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
121.16
FEMA Number:
3263
UNSPSC Code:
12164502
eCl@ss:
32160406
PubChem Substance ID:
Flavis number:
17.033
EC Number:
200-158-2
NACRES:
NA.21
MDL number:
Beilstein/REAXYS Number:
1721408
Organoleptic:
sulfurous
Grade:
FG, Halal
Quality Level
grade
FG, Halal
reg. compliance
EU Regulation 1334/2008 & 872/2012, FDA 21 CFR 172.320, FDA 21 CFR 184.1271
assay
≥97%
optical activity
[α]26/D +8.0 to +9.5°, c = 2 in 5 M HCl
mp
240 °C (dec.) (lit.)
solubility
H2O: 25 mg/mL
application(s)
flavors and fragrances
documentation
see Safety & Documentation for available documents
organoleptic
sulfurous
SMILES string
N[C@@H](CS)C(O)=O
InChI
1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
InChI key
XUJNEKJLAYXESH-REOHCLBHSA-N
General description
L-cysteine is a sulfur-containing amino acid. It can undergo Maillard reaction with reducing sugars to form volatile meat flavored compounds.
Biochem/physiol Actions
NMDA glutamatergic receptor agonist.
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Related Content
Volatile compounds produced by the reaction of L-cysteine or L-cystine with carbonyl compounds.
Kato S, et al.
Agricultural and Biological Chemistry, 37(3), 539-544 (1973)
Antioxidant effects of sulfur-containing amino acids
Atmaca G
Yonsei Medical Journal, 45, 776-788 (2004)
Nicholas Kwiatkowski et al.
Nature, 511(7511), 616-620 (2014-07-22)
Tumour oncogenes include transcription factors that co-opt the general transcriptional machinery to sustain the oncogenic state, but direct pharmacological inhibition of transcription factors has so far proven difficult. However, the transcriptional machinery contains various enzymatic cofactors that can be targeted