7-aminocephalosporanic acid; 7-ACA

Apperance：white to yellowish crystalline powder

Water: not more than 1.5%

Sulphated ash: not more than 0.3%

Heavy metals: not more than 30 ppm

By products (HPLC)

   Desacetyl-7-ACA-lactone: not more than 1.0%

   Desacetyl-7-ACA: not more than 1.0%

   Desacetoxy-7-ACA: not more than 1.0%

   Cephalosporin C: not more than 1.0%

Assay (7-ACA, HPLC on anhydrous basis): 95.5-102.0%