China (Mainland)
trimethoprim CAS NO.738-70-5
- Min.Order: 1 Kilogram
- Payment Terms:
- Product Details
Keywords
Quick Details
- ProName: trimethoprim
- CasNo: 738-70-5
- Appearance: White, cristalline powder
- Application: CAS: 738-70-5
- ProductionCapacity: Metric Ton/Day
- Purity: 98.5-101.0%
- LimitNum: 1 Kilogram
Superiority
GMP certificate
Details
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Items |
Standard |
Results |
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Appearance |
White or yellowish-white powder |
White powder |
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Solubility |
Very slightly soluble in water, slightly soluble in alcohol. |
Very slightly soluble in water, slightly soluble in alcohol. |
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•Identification |
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A: Melting point |
199-203 |
201.0-201.4 |
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B: Specific absorbance |
Max.287nm: 240-250 |
243 |
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C: IR-spectrum |
Complies with reference spectrum |
Complies with reference spectrum |
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D: Chemical reaction |
Green fluorescence at 365nm |
Green fluorescence at 365nm |
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Appearance of solution |
Not more intensely colored than Reference Solution BY7 |
Less intensely colored than reference solution BY7 |
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Related substances |
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Method A by HPLC: |
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Impurity F |
≤0.1% |
0.05% |
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Any single impurity |
≤0.1% |
<0.1% |
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Total impurities |
≤0.2% |
<0.2% |
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Method B by HPLC: |
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Any single impurity |
≤0.1% |
<0.1% |
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Total impurities |
≤0.2% |
<0.2% |
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Heavy metals |
≤20ppm |
< 20ppm |
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Residual methanol |
≤3000ppm |
Not detected |
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Residual DMSO |
≤5000ppm |
Not detected |
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Residual acetic acid |
≤5000ppm |
Not detected |
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Impurity K(aniline) by GC |
≤5ppm |
Not detected |
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Loss on drying |
≤0.5% |
0.3% |
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Sulphated ash |
≤0.1% |
0.02% |
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Assay |
98.5-101.0% |
99.71% |
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Particle size |
100% pass 300 mesh |
100% pass 300 mesh |
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