羧 甲 司 坦
638-23-3
S-Carboxymethyl-L-Cysteine
外觀 Description: 白色結(jié)晶或結(jié)晶性粉末 White crystals or crystalline powder
比旋光度 Specific optical rotation[a]D20°: -32.50°~ -35.50°
溶液狀態(tài) State of solution: Clear and colorless
干燥失重 Loss on drying: ≤0.50%
硫酸灰分 Sulphoated ash:≤0.30%
氯化物 Chloride: ≤0.15%
硫酸鹽 Sulfate (SO4): ≤300ppm
pH: 2.8~3.0
茚三酮正物質(zhì)含量 Nihydrin-positive substances:Not more intense than the spot with reference solution (0.5%)
含量 Assay: 98.5%~101.0%
南通普羅維康生物科技有限公司
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