USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
our company was built in 2009 with an iso certificate.in the past 5 years, we have grown up as a famous fine chemicals supplier in china and we had established stable business relationships with samsung,lg,merck,thermo fisher scientific and so on.our main business covers the fields below:
1.noble metal catalysts (pt.pd...)
2.organic phosphine ligands (tert-butyl-phosphine.cyclohexyl-phosphine...)
3.oled intermediates (fluorene,carbazole,boric acid...)
4.customs synthesis
our advantage:
1. higest quality and good package
2.fast delivery
3.better payment term
4.fast response to customer within 6 hours
5.good business credit in europe ,us ,japan ,korea
anyway ,if you need any chemicals from china ,henan tianfu can help you
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 |
mol file: | 52-90-4.mol |
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) |
safety information |
hazard codes | xn,xi |
risk statements | 22-36/37/38-20/21/22 |
safety statements | 36-37/39-26 |
wgk germany | 3 |
rtecs | ha1600000 |
f | 10-23 |
hs code | 29309012 |
hazardous substances data | 52-90-4(hazardous substances data) |
msds information |
provider | language |
---|---|
(+)-2-amino-3-mercaptopropionic acid | english |
sigmaaldrich | english |
acros | english |
alfa | english |
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. |
l-cysteine preparation products and raw materials |