L-Cystein (CAS 52-90-4) — formula C3H7NO2S, molecular weight 121.16; category organic chemicals.
L-Cystein (CAS 52-90-4) is a chemical raw material in the organic chemicals category. Its molecular formula C3H7NO2S comprises 3 C, 7 H, 1 N, 2 O, 1 S atoms. Its molecular weight is about 121.16. Reported physicochemical data: melting point around 240, LogP about -2.49. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 52-90-4 |
|---|---|
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 |
| Melting Point | 240 |
| LogP | -2.49 |
| Applications | CIR ingredient: Cysteine, Cysteine is a non-essential amino acid that has been used as a dough conditioner and veterinary detoxicant, Used as a flavoring agent, dough strengthener, nutritional supplement, and flour treating agent for foods |
| Category | Organic Chemicals |
Documented applications: CIR ingredient: Cysteine, Cysteine is a non-essential amino acid that has been used as a dough conditioner and veterinary detoxicant, Used as a flavoring agent, dough strengthener, nutritional supplement, and flour treating agent for foods.
L-Cystein is a carbon-based organic compound with CAS registry number 52-90-4 and molecular formula C3H7NO2S (molecular weight 121.16), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 52-90-4
Its molecular formula C3H7NO2S comprises 3 C, 7 H, 1 N, 2 O, 1 S atoms.
Also known as: L-Cystein · L-半胱氨酸
Category: organic chemicals
The CAS registry number of L-Cystein is 52-90-4.
Molecular formula C3H7NO2S, molecular weight 121.16.
It is also registered under: L-Cystein, L-半胱氨酸.
Recorded applications: CIR ingredient: Cysteine, Cysteine is a non-essential amino acid that has been used as a dough conditioner and veterinary detoxicant, Used as a flavoring agent, dough strengthener, nutritional supplement, and flour treating agent for foods.
Category: Organic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for L-Cystein (CAS 52-90-4), compiled from public chemistry databases.
| CAS Registry Number | 52-90-4 |
|---|---|
| PubChem CID | 5862 |
| Molecular formula | C3H7NO2S |
| IUPAC name | (2R)-2-amino-3-sulfanylpropanoic acid |
| UNII (FDA) | K848JZ4886 |
| FEMA number | 3263 |
| JECFA number | 1419 |
| Molecular Weight | 121.16 |
|---|---|
| XLogP3 | -2.5 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 2 |
| Exact Mass | 121.01974964 |
| Monoisotopic Mass | 121.01974964 |
| Topological Polar Surface Area | 64.3 |
| Heavy Atom Count | 7 |
| Melting Point | 240 |
|---|---|
| Melting Point | 260 °C decomposes |
| Melting Point | 220 °C |
| Solubility | 277000 |
| Solubility | 277 mg/mL at 25 °C |
| Vapor Pressure | 0.00000207 [mmHg] |
| LogP | -2.49 |
| LogP | log Kow = -2.49 |
| Ionization Efficiency | 1.24 |
| Ionization Efficiency | 2.7 |
L-cysteine; 52-90-4; cysteine; Cystein; (R)-2-Amino-3-mercaptopropanoic acid; Thioserine; Half-cystine; L-(+)-Cysteine; beta-Mercaptoalanine; L-Cystein; (2R)-2-amino-3-sulfanylpropanoic acid; Cysteinum; L-Cys; cisteina; Half cystine; 2-Amino-3-mercaptopropionic acid
| Regulatory & Food Contact | EU Flavoring substances FDA Substance added to food: DOUGH STRENGTHENER, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FLOUR TREATING Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Savory DOUGH STRENGTHENER, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FLOUR TREATING AGENT, NUTRIENT SUPPLEMENT |
|---|---|
| GHS notification summary | 33.8% (179 / 529) |
| GHS notification summary | 33.8% (179 / 529) |
|---|---|
| Reported hazard statements | H302 (55.6%), H315 (11.9%), H319 (11.9%), H335 (11.9%) |
This chemical does not meet GHS hazard criteria for 33.8% (179 of 529) of reports.
H302 (55.6%): Harmful if swallowed [Warning Acute toxicity, oral]
L-Cystein · CAS 52-90-4 · C3H7NO2S. UNII K848JZ4886. Melting Point: 240; Melting Point: 260 °C decomposes; Melting Point: 220 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: L-半胱氨酸