L-Cysteine CAS:52-90-4

L-Cysteine CAS:52-90-4 Basic information

Product Name:	L-Cysteine
Synonyms:	L-Alanine, 3-mercapto-;L-Amino-thopro-ponicacid;L-Mercaptoalanine;NSC-8746;Propanoic Acid, 2-amino-3-mercapto-, (R)-;Thioserine;cysteine,b-mercapto-alanine;L-CYSTEINE FREE BASE, BIOTECHNOLOGY &
CAS:	52-90-4
MF:	C3H7NO2S
MW:	121.16
EINECS:	200-158-2
Product Categories:	API intermediates;Cysteine [Cys, C];Amino Acids;Amino Acids and Derivatives;alpha-Amino Acids;Antioxidant;Biochemistry;Nutritional Supplements;L-Amino Acids;Amino Acids;amino
Mol File:	52-90-4.mol

L-Cysteine CAS:52-90-4 Chemical Properties

density:	1.197 (estimate)
Melting point:	220 °C (dec.)(lit.)
Boiling point:	293.9±35.0 °C(Predicted)
form:	Solid
storage temp.:	Store at RT.
Water Solubility:	280 g/L (25 ºC)
refractive index:	8.8 ° (C=8, 1mol/L HCl)
pka:	1.92(at 25℃)
BRN:	1721408
solubility:	H2O: 25 mg/mL
NIST Chemistry Reference:	L-Cysteine(52-90-4)
Merck:	14,2781
Stability:	Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.
Sensitive:	Air Sensitive
PH:	8.75 º (c=12, 2N HCl)
alpha:	8.75 º (c=12, 2N HCl)
FEMA:	3263 \| L-CYSTEINE
JECFA Number:	1419
λmax:	λ: 260 nm Amax: 1.5 λ: 280 nm Amax: 0.2
CAS DataBase Reference:	52-90-4(CAS DataBase Reference)
EPA Substance Registry System:	L-Cysteine (52-90-4)