| L-Cysteine hydrochloride anhydrous Basic information |
| Product Name: | L-Cysteine hydrochloride anhydrous |
| Synonyms: | L-(+)-α-amino-β-thiopropionic acid;L-β-mercapto;(2R)-2-Amino-3-sulfanylpropanoic acid hydrochloride;(2R)-2-Amino-3-mercaptopropanoic acid·hydrochloric acid;L-Cisteine·hydrochloride;L-Cysteine·hydrochloric acid;L-Cysteine hydrochlo;L-Cysteine hydrochloride anhydrous, extra pure |
| CAS: | 52-89-1 |
| MF: | C3H8ClNO2S |
| MW: | 157.62 |
| EINECS: | 200-157-7 |
| Product Categories: | Amino Acid Derivatives;Amino acidsPeptide Synthesis;Cysteine/Cystine;Amino Acids and Vitamins;Amino AcidsNutrition Research;Reagents and Supplements;L-Amino Acids;Amino acidsIon Channels;NMDA Agonists;Biochemicals Found in Plants;Excitatory Amino Acids;Ionotropic Glutamate Receptor ModulatorsNeurotransmitters;Ligand-Gated Ion Channels;Nutrition Research;Food and Feed Additive;Cysteine [Cys, C];Amino Acids;Nutritional Supplements |
| Mol File: | 52-89-1.mol |
| L-Cysteine hydrochloride anhydrous Chemical Properties |
| Melting point | 180°C |
| alpha | 5.5 º (c=8, 6 N HCL) |
| storage temp. | Store at RT. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White to light brown |
| optical activity | [α]20/D +6.4±0.3°, c = 5% in 5 M HCl |
| Water Solubility | SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,2781 |
| BRN | 3560277 |
| Stability: | Stable, but light, moisture and air sensitive. Incompatible with strong oxidizing agents, some metals. |
| InChIKey | IFQSXNOEEPCSLW-DKWTVANSSA-N |
| CAS DataBase Reference | 52-89-1(CAS DataBase Reference) |
| NIST Chemistry Reference | L-cysteine hydrochloride(52-89-1) |
| EPA Substance Registry System | L-Cysteine hydrochloride (52-89-1) |
| Safety Information |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 2 |
| RTECS | HA2275000 |
| F | 3-10-23 |
| TSCA | Yes |
| HS Code | 29309013 |
| Toxicity | LD50 intraperitoneal in mouse: 1250mg/kg |
| MSDS Information |
| Provider | Language |
|---|---|
| L-Cysteine hydrochloride anhydrous | English |
| SigmaAldrich | English |
| ALFA | English |
| L-Cysteine hydrochloride anhydrous Usage And Synthesis |
| Chemical Properties | solid |
| Uses | As dough conditioner. |
| Definition | ChEBI: A hydrochloride obtained by combining L-cysteine with one molar equivalent of hydrogen chloride. |
| Safety Profile | : Moderately toxic by intraperitoneal, intravenous, and possibly other routes. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Cl-. |
| Purification Methods | Likely impurities are cystine and tyrosine. Crystallise the salt from MeOH by adding diethyl r, or from hot 20% HCl. Dry it under vacuum over P2O5. Hygroscopic. [Beilstein 4 III 1580, 1600.] |
| L-Cysteine hydrochloride anhydrous Preparation Products And Raw materials |
| Raw materials | Ethanol-->Stannous chloride dihydrate-->L-Cystine-->L-Cysteine-->thiazoline |
| Preparation Products | N-Boc-S-Trityl-L-cysteine-->Carbocistein |