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Chemical Materials & Products / Other Chemical Products /

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Company:
China National Chemical Construction Jiangsu Company

Address:
17 West Beijing Road, Nanjing, Jiangsu, China (Mainland)

Phone:
+86-25-86630167

Methyldopa

Features:1) Methyldopa2) CAS no.: 41372-08-13) Standard: USP284) Usage: Antihypertensive drugsPacking:25kg/drumSpecifications:1) Appearance: white or almost white, or almost colorless crystalline powder2) Identification: A, B, C, D: positive3) Solubility: meets the requirements4) Appearance of solution: not more colored than BY6 or B65) Absorption: 122 ~ 1376) Acidity (0.1N NaOH): 0.50ml/g max.7) Specific rotation: -25.0 ~ -28.0o8) Optical rotation: -1.10 ~ -1.23o9) Residue on ignition: 0.10% max.10) Heavy metals: 10ppm max.11) Water: 10.0% ~ 13.0%12) Residual solvents: meets the requirements13) Related substances:a) 3-o-methyl methyldopa and related substance: 0.50% max.b) Any unknown impurity: 0.10% max.c) Total impurities: 2.0% max.d) Assay: 98.5% ~ 101.0%

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