Product or Service

Trimethoprim

Profile:Manufacturer - Producer|Ref:PSL208466YH | Country: China | Currency: | Export: No


Currency :
incoterm : fob
country : China
DESCRIPTION

TESTING ITEMS SPECIFICATION RESULT
Appearance WHITE OR YELLOWISH-WHITE POWDER White powder

Solubility
Very slightly soluble in water, slightly soluble in alcohol. Very slightly soluble in water,
slightly soluble in alcohol.
A: Melting point 199-203°C 200.0-202.7°C
B:Specific absorbance Max.287nm: 240-250 249
C: IR-spectrum Complies with reference spectrum Complies with reference spectrum
D:Chemical reaction Green fluorescence at 365nm
Green fluorescence at 365nm
Appearance of solution Not more intensely colored than Reference Solution BY7 Less intensely colored than reference solution BY7
Related substances Method A by HPLC:
Impurity F ≤0.1% 0.05%
Any single impurity ≤0.1% less than 0.1%
Total impurities ≤0.2% less than 0.2%
Related substances Method B by HPLC:
Any single impurity not more than 0.1% less than 0.1%
Total impurities not more than 0.2% less than 0.2%
Heavy metals not more than 20PPM less than 20ppm
RESIDUAL METHANOL not more than 3000PPM NOT DETECTED
Residual DMSO not more than 5000PPM NOT DETECTED
Residual acetic acid not more than 5000PPM NOT DETECTED
Impurity K(aniline) by GC not more than 5PPM NOT DETECTED
LOSS ON DRYING not more than 1.0% 0.33%
SULPHATED ASH not more than 0.1% 0.05%
ASSAY 98.5-101.0% 99.89%

Information Stock : Product in stock

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