- L-Cysteine
- L-Cysteine ethyl ester hydrochloride
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- L-Cysteine hydrochloride monohydrate
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Cas Database |
| Name |
L-Cysteine hydrochloride monohydrate |
EINECS | 200-157-7 |
| CAS No. | 7048-04-6 | Density | 1.54 g/cm3 |
| PSA | 111.35000 | LogP | 0.76610 |
| Solubility | 1 M at 20 °C in water, clear, colorless | Melting Point |
175 °C |
| Formula | C3H8ClNO2S.H2O | Boiling Point | 293.9 °C at 760 mmHg |
| Molecular Weight | 175.636 | Flash Point | 131.5 °C |
| Transport Information | N/A | Appearance | white crystalline powder |
| Safety | 26-36 | Risk Codes | 36/37/38 |
| Molecular Structure |
|
Hazard Symbols |
 Xi
|
| Synonyms |
Cysteine,hydrochloride, monohydrate, L- (8CI);L-Cysteine, hydrochloride, monohydrate(9CI); |
Article Data | 2 |
L-Cysteine hydrochloride monohydrate Synthetic route
| Conditions | Yield |
|---|---|
| In hydrogenchloride | 99% |
- 7048-04-6
L-cysteine hydrochloride monohydrate
| Conditions | Yield |
|---|---|
| In water (argon); 70°C, 2 h; elem. anal.; | 96% |
- 7048-04-6
L-cysteine hydrochloride monohydrate
- 95-01-2
2,4-Dihydroxybenzaldehyde
- 1367664-23-0
(4R)-2-(2,4-dihydroxyphenyl)thiazolidine-4-carboxylic acid
| Conditions | Yield |
|---|---|
| With sodium acetate In ethanol; water at 20℃; for 14h; | 95.8% |
| Conditions | Yield |
|---|---|
| In methanol at 50℃; for 100h; | 95% |
| Conditions | Yield |
|---|---|
| In water mixing of the components in double-distd. water and standing at 4°C overnight; sepn. of the ppt., washing with EtOH and dry Et2O and drying (P2O5, vac.); elem. anal.; | 88.4% |
| Conditions | Yield |
|---|---|
| With sodium acetate In tetrahydrofuran; water at 10 - 60℃; for 37h; pH=4 - 5; Inert atmosphere; | 85% |
| Conditions | Yield |
|---|---|
| In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.; | 82% |
| Conditions | Yield |
|---|---|
| In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.; | 80% |
- 7048-04-6
L-cysteine hydrochloride monohydrate
| Conditions | Yield |
|---|---|
| In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.; | 80% |
- 7048-04-6
L-cysteine hydrochloride monohydrate
| Conditions | Yield |
|---|---|
| In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.; | 80% |
L-Cysteine hydrochloride monohydrate Chemical Properties
L-Cysteine hydrochloride monohydratewhite is crystals or crystalline powder with strongly acid taste. L-Cysteine hydrochloride monohydratewhite is very soluble in water.
appearance: white solid.
formula: C3H7NO2S.HCl.H2O.
molecular weight: 175.64 g/mol.
melting point: 176°C.
solubility: soluble in cold water.
L-Cysteine hydrochloride monohydrate Uses
L-Cysteine Hydrochloride Monohydrate is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.
It's used as raw materials for manufacturing N-Acetyl-L-Cysteine, S-Carboxymethyl
-L-Cysteine and L-Cysteine base etc.
Besides, it is useful to cure liver disease, antioxidant and antidote.
In addition, it is used in cosmetic.
L-Cysteine hydrochloride monohydrate Toxicity Data With Reference
ORAL (LD50): Acute: 3550 mg/kg [Mouse]. 5580 mg/kg[Rat]. 4200 mg/kg [Mouse].
It is very hazardous in case of skin and eye contact, of ingestion, of inhalation.
Repeated or prolonged inhalation of it may lead to chronic respiratory irritation.
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