USD $100.00-100.00 / Kilogram
USD $10.00-90.00 / Kilogram
USD $8.80-8.80 / Gram
USD $10.00-90.00 / Kilogram
USD $2.00-2.00 / Gram
USD $1.00-10.00 / Kilogram
USD $2.00-2.00 / Gram
USD $2.00-2.00 / Gram
l-cysteine basic information |
product name: | l-cysteine |
synonyms: | (r)-2-amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;cystein;half-cysteine;l-alanine, 3-mercapto- |
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 |
l-cysteine chemical properties |
mp | 220 °c (dec.)(lit.) |
alpha | 8.75 º (c=12, 2n hcl) |
fema | 3263 |
refractive index | 8.8 ° (c=8, 1mol/l hcl) |
storage temp. | store at rt. |
solubility | h2o: 25 mg/ml |
water solubility | 280 g/l (25 ºc) |
sensitive | air sensitive |
merck | 14,2781 |
brn | 1721408 |
stability: | stability stable, but may be air sensitive. incompatible with oxidizing agents, bases. |
cas database reference | 52-90-4(cas database reference) |
nist chemistry reference | l-cysteine(52-90-4) |
epa substance registry system | l-cysteine(52-90-4) |
l-cysteine usage and synthesis |
chemical properties | white crystalline powder |
usage | l-cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. l-cysteine is commonly use d as a precursor in the food and pharmaceutical industries. l-cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours. |