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high purity 98.0-101.0% L-Cysteine Base AJI92
Product Detailed
Related Categories:Pharmaceutical
Related Product Searches:high purity 98.0-101.0% L-Cysteine Base AJI92,High Quality,L-Cysteine, l-cysteine ethyl ester hcl,TOPC-0459
L-Cysteine,
Descriptionwhite or white crystalline powder, slightly characteristic taste..
CAS No.52-90-4
Assay: 98.0-101.0%
Related Product Searches:high purity 98.0-101.0% L-Cysteine Base AJI92,High Quality,L-Cysteine, l-cysteine ethyl ester hcl,TOPC-0459
L-Cysteine Base
| ITEM | SPECIFICATION | RESULT |
| SPECIFIC ROTATION [a]D20o: | +8.3o ~ +9.5o | +8.50o |
| STATE OF SOLUTION[TRANSMITTANCE]: | Not less than 95.0% | 96.0% |
| CHLORIDE [Cl] : | 0.04% Max | 0.035% |
| AMMONIUM [NH4] : | 0.02% Max | 0.01% |
| SULFATE (SO4) : | 0.030% Max | 0.015% |
| IRON [Fe] : | 10ppm Max | 5ppm |
| HEAVY METALS [Pb] : | 10ppm Max | 4ppm |
| ARSENIC [As2O3] : | 1ppm Max | 0.3ppm |
| OTHER AMINO ACIDS : | Chromatographically not detectable | Qualified |
| LOSS ON DRYING : | 0.5% Max | 0.3% |
| RESIDUE ON IGNITION[SULFATED] : | 0.10% Max | 0.05% |
| ASSAY: | 98.0% ~ 101.0% | 99.50% |
| PH | 4.5 to 5.5 | 4.8 |
| CONCLUSION: BE IN ACCORDANCE WITH AJI92/FCCIV | ||
L-Cysteine hcl monohydrate
| ITEM | SPECIFICATION | RESULT |
| SPECIFIC ROTATION [a]D20o: | +5.5o ~ +7.0o | +5.9o |
| STATE OF SOLUTION[TRANSMITTANCE]: | Clear and colorlessNot less than 98.0% | 98.0% |
| CHLORIDE [Cl] : | 19.89% to 20.29% | 20.20% |
| AMMONIUM [NH4] : | 0.02% Max | 0.010% |
| SULFATE (SO4) : | 0.020% Max | 0.010% |
| IRON [Fe] : | 10ppm Max | 5ppm |
| HEAVY METALS [Pb] : | 10ppm Max | 7ppm |
| ARSENIC [As2O3] : | 1ppm Max | 0.5ppm |
| OTHER AMINO ACIDS : | Chromatographically not detectable | Qualified |
| LOSS ON DRYING : | 8.5% to 12.0% | 10.8% |
| RESIDUE ON IGNITION[SULFATED] : | 0.10% Max | 0.03% |
| ASSAY: | 99.0% ~ 100.5% | 99.92% |
| PH | 1.5 to 2.0 | 1.8 |
| CONCLUSION: BE IN ACCORDANCE WITH AJI92/USP24 | ||
L-Cysteine HCL anhydrous
| ITEM | SPECIFICATION | RESULT |
| SPECIFIC ROTATION [a]D20o: | +5.6o ~ +8.9o | +6.30o |
| STATE OF SOLUTION[TRANSMITTANCE]: | Clear and colorlessNot less than 98.0% | 98.1% |
| HEAVY METALS [Pb] : | 10ppm Max | 6ppm |
| ARSENIC [As2O3] : | 1ppm Max | 0.5ppm |
| OTHER AMINO ACIDS : | Chromatographically not detectable | Qualified |
| LOSS ON DRYING : | 1.0% Max | 0.5% |
| RESIDUE ON IGNITION[SULFATED] : | 0.10% Max | 0.03% |
| ASSAY: | 98.0% ~ 102.0% | 99.93% |
| PH | 1.5 to 2.0 | 1.8 |
| CONCLUSION: BE IN ACCORDANCE WITH USP24 | ||
high purity 98.0-101.0% L-Cysteine Base AJI92