Fenbendazole

CAS number: 43210-67-9

Molecular formula: C15H13N3O2S

molecular weight: 299.35

Chemical structure:

PRODUCTFENBENDAZOLE USP
BATCH NOFBZ/018/2018‐19QTY200 kgs
MFG.DATEJUNE‐2018EXP.DATEMAY‐2023
SR.NOTESTSPECIFICATIONRESULT
01DescriptionWhite or almost white powderAlmost white powder
02SolubilityPractically insoluble in water; sparingly soluble in dimethylformamide; very slightly soluble in methanolComplies
03IdentificationInfra‐red absorption spectrum should be concordant     with reference/working standard spectrumComplies
04Loss on dryingNot more than 1.00% w/w0.33% w/w
05Residue on ignitionNot more than 0.3% w/w0.056% w/w
06Heavy MetalsNot more than 20 ppmComplies
07Related Compounds (HPLC)Fenbendazole Related Compound A‐ NMT 0.5%
Fenbendazole Related Compound B‐ NMT 0.5%
Other Impurity – NMT 0.5%
Total impurities  ‐ NMT 1.0%
Not detected 0.24%
0.32%
0.56%
08Assay98.0% to 101% w/w (dried
basis)
99.01% w/w