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Name
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L-Cysteine monohydrochloride
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|---|---|
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Synonyms
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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-Cysteine-hydrochloric acid;
L-Cysteine-hydrochloride;
L-Cysteine hydrochlo;
L-Cysteine hydrochloride anhydrous, extra pure
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CAS Number
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52-89-1
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Molecular Formula
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C3H8ClNO2S
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Molecular Weight
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157.62
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EINECS Number
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200-157-7
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Melting Point
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180°C
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Specific Rotation
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5.5° (c=8, 6 N HCl)
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Storage Conditions
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Inert atmosphere, Room Temperature
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Solubility
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H₂O:1 M at 20 °C, transparent, colorless
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Form
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Solid
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Color
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White to light brown
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Odor
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Odorless
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Biological Source
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synthetic
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Optical Rotation
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[α]20/D +6.4±0.3°, c = 5% in 5 M HCl
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Water Solubility
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SOLUBLE
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Sensitivity
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Hygroscopic
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Merck
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14,2781
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BRN
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3560277
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Stability
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Stable, but sensitive to light, moisture, and air. Incompatible with strong oxidizing agents and certain metals.
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Usage
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1. Used in the treatment of radiopharmaceutical poisoning, heavy metal poisoning, toxic hepatitis, serum sickness, etc., and can prevent hepatic necrosis.
2. Used as a component in cosmetic products such as hair perming agents, sunscreens, hair-growth perfumes, and hair-nourishing essences. 3. Can be used as a food additive to prevent the oxidation and discoloration of vitamin C; in bread, it promotes the formation of gluten protein, as well as fermentation and demolding. 4. Used in biochemical research as a reducing agent for the determination of hemolysin, and in medicine as an antidote. |
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