Dimethyl 2,5-pyridinedicarboxylate CAS: 881-86-7 CAS NO.881-86-7

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%