Detailed Product Description

Features:
1) Levodopa (L-Dopa, L-Tyrosine, Larodopa, Dopar)
2) CAS no.: 59-92-7
3) Standard: BP2002, USP 24, EP4
4) Molecular formula: C₉H₁₁NO₄
5) Molecular weight: 197.19

Packing:
25kg/drum

Specifications:
1) Appearance: white or slightly cream crystalline powder, odorless
2) Identification: I.R: positive
3) Solubility: meets the requirements
4) PH: 4.5 ~ 7.0
5) Color of solution: meets the requirements
6) Organic volatile impurity: meets the requirements
7) Light absorption: 137 ~ 147^o
8) Optical rotation (BP2002): -1.27 ~ -1.34^o
9) Specific rotation (USP24): -160 ~ -167^o
10) Heavy metals (BP2002): 10ppm max., USP24 20ppm max.
11) Related substances (BP2002): meets the requirements
12) 3-(3,4,6-Trihydroxyphenyl) alanine (USP24): 0.1% max.
13) 3-Methoxytyrosine (USP24): 0.5% max.
14) Loss on drying: 1.0% max.
15) Residue on ignition: 0.10% max.
16) Residual solvent: Ethanol: 1.0% max.
17) Assay (on dry basis): 99.0~101.0%