Trimethoprim Micronized cas no 738-70-5
Characteristics:White or yellowish-white powder.Very slightly soluble in water,slightly soluble in alcohol.
Storage:store in a well-closed container,protected from light.
shelf life:2years
Packing:25kg/fibre drum
Items |
Standards |
Result |
Identification
A)
B)
C)
D) |
First Identification:C
Second Identificaton:A,B,D
A)Between199-203ºC
B)The specific absorbance at the absorption maximum is 240 to 250.
C)Comparison trimethoprim CRS
D)Examined in ultraviolet light at 365 nm,shows green fluorescence. |
A)200-203ºC
B)244
C)comply
D)comply |
Appearance of solution |
The solution is not more intensely coloured than reference solution BY1 |
Pass |
Related substances
Single impurity
Total impurities |
Pass
0.1MAX
0.2MAX |
Pass
0.02
0.05 |
Heavy metals |
20ppmMAX |
<20PPM |
Loss on drying |
1.0%MAX |
0.4% |
Sulphated ash |
0.1MAX |
0.1% |
Assay |
98.5%-101.0% C14H18N4O3 |
99.6% |
For customer reference only.
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