Cefdinir

CAS number:91832-40-5

Molecular formula:C14H13N5O5S2

molecular weight:395.41400

Chemical structure:

Product name Cefdinir
Shelf life 2 years
Test items Enterprise specification Test results Conclusion
Character Slight yellow to yellow crystalline powder, with slight smelly Slight yellow crystalline powder, with slight smelly Conform
Identification

1. In the chromatogram of the assay, the retention time of the principal peak in the chromatogram obtained with the test solution should correspond to that of the principal peak in the chromatogram obtained with reference solution.

2. The IR absorption spectrum of the substance to be examined should correspond to that of the reference

spectrum(No.l 122).

1. In the chromatogram of the assay, the retention time of the principal peak in the chromatogram obtained with the test solution corresponds to that of the principal peak in the chromatogram obtained with reference solution.

2. The IR absorption spectrum of the substance to be examined corresponds to that of the reference spectrum(No.l 122).

Conform
Specific rotation -58一-66° -62° Conform
Absorption coefficient 571一-610° 583
Conform
Crystallinity It gives phenomenon of birefringence and extinction direction. It gives phenomenon of birefringence and extinction direction. Conform
pH 2.5 4.5 3.4 Conform
Water No more than 2.0% 1.1% Conform
Conclusion: The test results of substance examined conform to the Specification of Cefdinir