CYSTEINE (CAS 4371-52-2) — formula C3H7NO2S, molecular weight 121.16.
CYSTEINE (CAS 4371-52-2) is classified under Food Additives, with molecular formula C3H7NO2S and molecular weight 121.16, and serves as a key raw material in the food and beverage industry — commonly applied as a food additive, nutritional supplement, or processing aid where regulatory-grade purity is required. Jinan Shenghe Chemical Co., Ltd. supplies CYSTEINE at commercial scale with stable lot-to-lot quality, accompanied by COA and full specification documentation. Typical categorization: Food Additives.
| CAS Number | 4371-52-2 |
|---|---|
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 |
| Melting Point | 240 |
| LogP | -2.49 |
CYSTEINE is a chemical compound with CAS registry number 4371-52-2 and molecular formula C3H7NO2S (molecular weight 121.16).
CAS number: 4371-52-2
Its molecular formula C3H7NO2S comprises 3 C, 7 H, 1 N, 2 O, 1 S atoms.
Also known as: CYSTEINE · L-半胱氨酸
The CAS registry number of CYSTEINE is 4371-52-2.
Molecular formula C3H7NO2S, molecular weight 121.16.
It is also registered under: CYSTEINE, L-半胱氨酸.
Independent reference data for CYSTEINE (CAS 4371-52-2), compiled from public chemistry databases.
| CAS 号 | 4371-52-2 |
|---|---|
| PubChem CID | 5862 |
| 分子式 | C3H7NO2S |
| IUPAC 名称 | (2R)-2-amino-3-sulfanylpropanoic acid |
| UNII（FDA） | K848JZ4886 |
| FEMA 编号 | 3263 |
| JECFA 编号 | 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
| 法规与食品接触 | 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 通报统计 | 33.8% (179 / 529) |
| GHS 通报统计 | 33.8% (179 / 529) |
|---|---|
| 已通报的危害声明 | H302 (55.6%), H315 (11.9%), H319 (11.9%), H335 (11.9%) |
L-半胱氨酸 · CAS 4371-52-2 · 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