SPL Set ID: 6673be13-4c74-70b9-e053-2a91aa0a211d

Cefazolin for Injection, USP is a semi-synthetic cephalosporin for parenteral administration. It is the sodium salt of 3-{[(5-methyl-1,3,4-­thiadiazol-2-yl)thio]-methyl}-8-oxo-7-[2-(1H-tetrazol-1-yl) acetamido]-5-thia-1-azabicyclo [4.2.0]oct-2-ene-2-carboxylic acid. The molecular formula is C 14 H 13 N 8 NaO 4 S 3 and molecular weight is 476.49. Structural Formula: Each vial contains 48 mg of sodium/1 gram of cefazolin sodium. Cefazolin for Injection, USP is white to off-white crystalline powder, supplied in vials equivalent to 500 mg or 1 gram of cefazolin. Chemical structure