Cefprozil

CAS number:92665-29-7

Molecular formula:C18H19N3O5S

molecular weight:389.4256

Chemical structure:

Product Name CEFPROZIL(USP36)
Shelf Life

2 years


TEST SPECIFICATIONS RESULT
Description A white to almost white powder or crystalline powder Almost white crystalline powder
Identification

- By IR The Infrared absorption spectrum of the potassium bromide dispersion of the sample must be concordant with that of a similar preparation of  cefprozil(Z)-isomer working standard/reference standard. Complies
- By HPLC The retention times of the cefprozil(Z)-isomer and cefprozil(E)-isomer peaks in the chromatogram of the Assay preparation correspond to those of the Standard preparations, as obtained in the Assay. Complies
Crystallinity Should be crystalline crystalline
PH   3.5 ~ 6.5 4.38
Water  3.5% ~ 6.5% 4.87%

Related compounds

Cefadroxil

-Individual

-Total impurities


≤ 0.5%

≤ 0.5%

≤ 1.5%


0.16%

ND

ND
Cefprozil (E)-isomer ratio 0.06~0.11 0.074

Assay (By HPLC,w/w)

(Contains C18H19N3O5S, Calculated on the anhydrous basis) 
900ug/mg~1050ug/mg 992.7ug/mg
REMARKS: The material complies as per above specifications.