Product Name: Cefaclor

Product No.: KL1C005000 CAS#: 70356-03-5 Chemical Formula: C15H14ClN3O4S Molecular Weight: 367.80400 "IUPAC Name: (6R,7R)-7-[[(2R)-2-Amino-2-phenylacetyl]amino]-3-chloro-

8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monohydrate"

Product Name: Cefaclor EP Impurity A

 Product No.: KL1C005001 CAS#: 875-74-1 Chemical Formula: C8H9NO2 Molecular Weight: 151.17 IUPAC Name: (R)-2-amino-2-phenylacetic acid

Product Name: Cefaclor EP Impurity B

 Product No.: KL1C005002 CAS#: 53994-69-7 Chemical Formula: C7H7ClN2O3S Molecular Weight: 234.66 IUPAC Name: (6R,7R)-7-amino-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Product Name: Cefaclor EP Impurity C

Product No.: KL1C005003 CAS#: 143059-69-2 Chemical Formula: C15H14ClN3O4S Molecular Weight: 367.80 IUPAC Name: (6R,7R)-7-((S)-2-amino-2-phenylacetamido)-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Product Name: Cefaclor EP Impurity D

 Product No.: KL1C005004 CAS#: 152575-13-8 Chemical Formula: C15H14ClN3O4S Molecular Weight: 367.80 IUPAC Name: (2R,6R,7R)- and (2S,6R,7R)-7-[[(2R)-2-amino-2-phenylacetyl]amino]-3-chloro-8-oxo-5-thia- 1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid

Product Name: Cefaclor EP Impurity E

 Product No.: KL1C005005 CAS#: 188915-50-6 Chemical Formula: C14H14ClN3O4S Molecular Weight: 355.79 IUPAC Name: 2-[[(2R)-2-amino-2-phenylacetyl]amino]-2-(5-chloro-4-oxo-3,4-dihydro-2H-1,3-thiazin-2-yl)acetic acid

Product Name: Cefaclor EP Impurity F

 Product No.: KL1C005006 CAS#: 73200-73-4 Chemical Formula: C10H8N2O Molecular Weight: 172.19 IUPAC Name: 3-phenylpyrazin-2-ol

Product Name: Cefaclor EP Impurity G Product No.: KL1C005007 CAS#: N/A Chemical Formula: C16H17N3O4S Molecular Weight: 347.30 "IUPAC Name: (2R,6R,7R)-and(2S,6R,7R)-7-[[(2R)-2-amino-2-phenylacetyl]amino]-3-methylene-8-oxo-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylic acid (isocefalexine)

Product Name: Cefaclor Impurity H (EP)

Product No.: KL1C005008 CAS#: N/A Chemical Formula: C23H21ClN4O5S Molecular Weight: 500.95 IUPAC Name: (6R,7R)-7-((R)-2-((R)-2-amino-2-phenylacetamido)-2-phenylacetamido)-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Product Name: 7S-Cefaclor

Product No.: KL1C005009 CAS#: N/A "Chemical Formula:  C15H14ClN3O4S

 Molecular Weight: 367.80 IUPAC Name: (6R,7S)-7-((R)-2-amino-2-phenylacetamido)-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid