**English Name:** D-Cysteine Hydrochloride Monohydrate; HD-Cys-OH·H₂O·HCl
**other Names:** D-β-Mercaptoalanine Hydrochloride
**CAS Number:** 32443-99-5
**Molecular Formula:** C₃H₇NO₂S·HCl·H₂O
**Molecular Weight:** 175.63 g/mol
**Purity:** ≥ 98.0% (BR Grade)
**Appearance:** White crystalline powder or granules
**Description:** A non-natural isomer of cysteine, this compound is hygroscopic and sensitive to air exposure. It dissolves well in water and ethanol.
**Specific Optical Rotation:** [α]²â°á´° = -5° (c = 2, 5 mol)
**Handling Notes:** Slightly irritating; use with proper personal protective equipment.
**Applications:** Widely used in biochemical research, analytical chemistry, and as a reagent in various laboratory procedures.
**Storage:** Store at room temperature, away from direct light and moisture. Keep container tightly sealed when not in use.
This product is ideal for researchers working in the fields of organic synthesis, enzymology, and protein chemistry. Its high purity ensures reliable results in experiments requiring precise chemical composition. Always handle with care and follow standard safety protocols when working with such compounds.
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