L(+)-Cystéine, chlorhydrate monohydraté 98.5-101.5% (base substance sèche)
Marques : Thermo Fisher ScientificTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
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Attention
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Synonyme(s):
(R)-(+)-Cystéine, chlorhydrate monohydraté, H-Cys-OH.HCl.H2O
Formule:
HSCH₂CH(NH₂)COOH·HCl·H₂O Poids moléculaire: 175.64 g/mol Point de fusion: ∼175 °C (déc.) Température de stockage: Température ambiante |
Numéro MDL:
MFCD00065606 Numéro CAS: 7048-04-6 EINECS: 200-157-7 Indice Merck: 14,02781 |
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Résultats des tests de spécification
Form | White crystalline powder |
Assay (unspecified) | 98.5 to 101.5% (dry basis) |
Identification (FTIR) | Conforms |
Residual halide: Chlorine (Cl) | 19.8 - 20.8% |
Residue on ignition | ≤ 0.1% |
Impurity content: Sulfate (SO4) | ≤ 0.03% |
Loss on Drying | 8.0 to 12.0% |
Optical Rotation | +5.7° to 6.8° (c=8 in in 6N HCl, dry basis) |
Thin Layer Chromatography | Homogeneous |
Trace Metal: Arsenic (As) | ≤ 1.5 ppm |
Trace Metal: Heavy Metals (Pb) | ≤ 10 ppm |
Trace Metal: Iron (Fe) | ≤ 10 ppm |
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