Description
Technical Parameters
Product Brief Introduction
Product name: Trimethoprim
CAS: 738-70-5
MF: C14H18N4O3
MW: 290.32
Product Specification
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Appearance |
White or yellowish-white powder |
|
Identification |
IR: the infrared absorption spectrum of the sample complies with the reference standard. |
|
|
Ultraviolet absorption (on the dried basis): ≤3.0% |
|
Appearance of Solution |
Not more intensely coloured than reference solution BY7 |
|
Melting Point |
199.0℃ ~ 203.0℃ |
|
Loss on Drying |
≤0.5% |
|
Residue on Ignition |
≤0.1% |
|
Related Substances |
Impurity E ≤0.1% |
|
|
Impurity B ≤0.1% |
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|
Impurity F ≤0.1% |
|
|
Impurity I ≤0.1% |
|
|
Impurity K(GC) ≤4.7ppm |
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Any other impurities ≤0.1% |
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|
Total impurities ≤0.2% |
|
Assay (on dried basis) |
98.5% ~ 101.0% |
