product name: | 2-mercapto-4-methylpyrimidine |
cas no. | 6959-66-6 |
structural formula: | |
appearance: | yellow crystal |
assay: | 97% |
moisture: | ≤ 0.5% |
packing: | plastic bag lined fiber drum, net wt 25kg. |
uses: | as pharmaceutical intermediates |
item | standard | test results | |
identification |
a.h-nmr:comply with the structure |
complies |
|
b.lc-ms:comply with the structure |
complies |
||
c.the ir spectrum of sample should be identical with that of reference standard; |
complies |
||
d.hplc-esi-ms the retention time of the major peak in the chromatogram of the assay preparation corresponds to that in the chromatogram of the standard preparation, as obtained in the assay. |
complies |
||
loss on drying |
≤0.5% |
0.11% |
|
heavy metals |
≤10 ppm |
<10ppm |
|
sulphated ash |
≤0.2%, determined on 1.0 g. |
0.009% |
|
purity |
≥99.0% |
99.82% |
|
assay |
99.0% |
99.9% |