7-[1-(1H)-Tetrazolylacetamido]desacetoxycephalosporanic acid is a potential impurity in commercial preparations of the cephalosporin antibiotic cefazolin.1
1.Liu, S., Yao, S., Zhang, H., et al.Determination of relative response factors of cefazolin impurities by quantitative NMRAAPS PharmSciTech18(6)1895-1900(2017)
















