Ertapenem Impurity 2

CAS NO.: 724700-26-9

Formula: C12H14N2O3

Weight: 234.26

Ertapenem Impurity 3

CAS NO.: 770703-11-2

Formula: C12H14N2O4

Weight: 250.25

Ertapenem Impurity 4

CAS NO.: 266337-30-8

Formula: C12H14N2O4

Weight: 250.25

Ertapenem Impurity 5

CAS NO.:

Formula: C23H25N3O9S

Weight: 519.53

Ertapenem Impurity 6

CAS NO.:

Formula: C47H55N5O15S2

Weight: 994.1

Ertapenem Impurity 7

CAS NO.:

Formula: C44H50N6O14S2

Weight: 951.03

Ertapenem Impurity 8

CAS NO.:

Formula: C44H50N6O14S2

Weight: 951.03

Ertapenem Impurity 9

CAS NO.: 402955-37-7

Formula: C44H48N6O13S2

Weight: 933.02

Ertapenem Impurity 10

CAS NO.: 1199797-43-7

Formula: C44H48N6O13S2

Weight: 933.02

Ertapenem Impurity 11

CAS NO.:

Formula: C29H32N4O7S

Weight: 580.66

Ertapenem Impurity 12

CAS NO.:

Formula: C24H30N4O6S

Weight: 502.59

Erythromycin (Roxithromycin EP Impurity A)

CAS NO.: 114-07-8

Formula: C37H67NO13

Weight: 733.94

Erythromycin A 9-Oxime (Z-Isomer)

CAS NO.:

Formula: C37H68N2O13

Weight: 748.95

Erythromycin A 9-Oxime (Mixture of Z and E Isomers)

CAS NO.: 13127-18-9

Formula: C37H68N2O13

Weight: 748.95

Erythromycin EP Impurity B

CAS NO.: 992-62-1

Formula: C36H65NO13

Weight: 719.91

Erythromycin B

CAS NO.: 527-75-3

Formula: C37H67NO12

Weight: 717.95