Impurity Reference Standard - Products

Ethosuximide

CAT No: CL-ESX-01 CAS No: 77-67-8 Mol Wt: 141.2 Mol F: C7H11NO2 Inv Status: Custom Synthesis

Chemical Name: 3-Ethyl-3-methylpyrrolidine-2,5-dione

Ethosuximide EP Impurity A

CAT No: CL-ESX-02 CAS No: 631-31-2 Mol Wt: 160.2 Mol F: C7H12O4 Inv Status: Custom Synthesis

Chemical Name: (2RS)-2-Ethyl-2-methylbutanedioic acid

Ethosuximide EP Impurity B

CAT No: CL-ESX-03 CAS No: 50598-33-9 Mol Wt: 142.2 Mol F: C7H10O3 Inv Status: Custom Synthesis

Chemical Name: 2-Ethyl-2-methylsuccinic anhydride

Ethosuximide Impurity 1

CAT No: CL-ESX-04 CAS No: 43010-65-7 Mol Wt: 174.2 Mol F: C8H14O4 Inv Status: Custom Synthesis

Chemical Name: 3-(Methoxycarbonyl)-3-methylpentanoic acid

Ethosuximide Impurity 2

CAT No: CL-ESX-05 CAS No: 84590-14-7 Mol Wt: 174.2 Mol F: C8H14O4 Inv Status: Custom Synthesis

Chemical Name: 2-Ethyl-4-methoxy-2-methyl-4-oxobutanoic acid

Ethosuximide D5

CAT No: CL-ESX-06 CAS No: 1989660-59-4 Mol Wt: 146.2 Mol F: C7H6D5NO2 Inv Status: Custom Synthesis

Chemical Name: 3-(Ethyl-d5)-3-methylpyrrolidine-2,5-dione