CAS Number52-90-4
SynonymsCysteine; E 920; H-Cys-OH.Hcl; H-Cys-OH; CYSH; L-Cysteine; 3-mercapto-L-Alanine; L-Cys; b-Mercaptoalanine; Cys; a-Amino-b-thiolpropionic Acid; cystein; (R)-(+)-Cysteine; FEMA 3263; L-β-Mercaptoalanine; EINECS 200-158-2; Thioserine; (R)-2-amino-3-mercapto-Propanoic acid; (2R)-2-amino-3-sulfanylpropanoic acid; hydrogen L-cysteinate; (R)-Cysteine; MFCD00064306
Molecular FormulaHSCH2CH(NH2)CO2H
Molecular Weight121.16
Purity≥98%
Density1.3±0.1 g/cm3
Boiling Point293.9±35.0 °C at 760 mmHg
Melting Point240 °C (dec.) (lit.)
Appearancecrystalline powder
EINECS200-158-2
Symbol
Signal WordWarning
| Chemical & Physical Properties | |
|---|---|
| CAS Number | 52-90-4 |
| Catalog No. | 2A-9016639 |
| Chinese Name | L-半胱氨酸 |
| Synonyms | Cysteine; E 920; H-Cys-OH.Hcl; H-Cys-OH; CYSH; L-Cysteine; 3-mercapto-L-Alanine; L-Cys; b-Mercaptoalanine; Cys; a-Amino-b-thiolpropionic Acid; cystein; (R)-(+)-Cysteine; FEMA 3263; L-β-Mercaptoalanine; EINECS 200-158-2; Thioserine; (R)-2-amino-3-mercapto-Propanoic acid; (2R)-2-amino-3-sulfanylpropanoic acid; hydrogen L-cysteinate; (R)-Cysteine; MFCD00064306 |
| Molecular Formula | HSCH2CH(NH2)CO2H |
| Molecular Weight | 121.16 |
| Purity | ≥98 |
| Density | 1.3±0.1 g/cm3 |
| Boiling Point | 293.9±35.0 °C at 760 mmHg |
| Melting Point | 240 °C (dec.) (lit.) |
| Appearance | crystalline powder |
| Water Solubility | 280 g/L (25 ºC) |
| Storage Condition | Should be sealed and stored in a dry place away fr |
| Application | L-cysteine is a thiol-containing non-essential amino acid that is oxidized to form cystine. |
| EINECS | 200-158-2 |
| HTC | 2930901000 |
| PubChem ID | 24892959 |
| MDL Number | MFCD00064306 |
| SMILES | 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 |
| Beilstein/REAXYS | 1721408 |
| NACRES Code | NA.75 |
| eCl@ss | 32160406 |
| UNSPSC | 12352209 |
| Hazard Symbols | Xn |
| Risk Codes | R22;R36/37/38 |
| Safety Description | S26;S37/39 |
| MSDS | msds/16639_1_52_90_4.pdf |
| Bioactivity | L-Cysteine is a thiol-containing non-essential amino acid that is oxidized to form cystine. Related Catalog Natural Products >> Acids and Aldehydes Research Areas >> Metabolic Disease Target Human Endogenous Metabolite References [1]. McGavigan AK, et al. L-cysteine suppresses ghrelin and reduces appetite in rodents and humans. Int J Obes (Lond). 2015 Mar;39(3):447-55. Chemical & Physical Properties Density 1.3±0.1 g/cm3 Boiling Point 293.9±35.0 °C at 760 mmHg Melting Point 220 °C (dec.)(lit.) Molecular Formula C3H7NO2S Molecular Weight 121.158 Flash Point 131.5±25.9 °C Exact Mass 121.019745 PSA 102.12000 LogP 0.23 Vapour Pressure 0.0±1.3 mmHg at 25°C Index of Refraction 1.550 InChIKey XUJNEKJLAYXESH-REOHCLBHSA-N SMILES NC(CS)C(=O)O Water Solubility 280 g/L (25 ºC) |
| Use of | L-Cysteine is a thiol-containing non-essential amino acid that is oxidized to form cystine. Properties Articles431 Name L-cysteine Synonym More Synonyms L-cysteine Biological Activity Description L-Cysteine is a thiol-containing non-essential amino acid that is oxidized to form cystine. Related Catalog Natural Products >> Acids and Aldehydes Research Areas >> Metabolic Disease Human Endogenous Metabolite References [1]. McGavigan AK, et al. L-cysteine suppresses ghrelin and reduces appetite in rodents and humans. Int J Obes (Lond). 2015 Mar;39(3):447-55. Chemical & Physical Properties Molecular Formula C3H7NO2S Exact Mass 121.019745 PSA 102.12000 Index of Refraction 1.550 InChIKey XUJNEKJLAYXESH-REOHCLBHSA-N SMILES NC(CS)C(=O)O |
| Tax Rebate | 13.0% |
| Supervision | None. MFN tariff: 6.5%. Ordinary tariff: 30.0% |
| Transport Info | Product name: Purity: 98.0% |
| MSDS Transport Info | Module 14. Shipping information United Nations classification: inconsistent with United Nations classification standards UN number: not specified |
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