CAS 77-67-8 appears in our catalog under these names: Ethosuximide, Ethosuximide 1.0 mg/ml in Methanol, Ethosuximide/ 99.72% (existing batch purity), Ethosuximide, >98.0%(GC)(T), Ethosuximide 98%. Offered by: Chemat Brand, TRC, Mikromol, LoGiCal, Dr. Ehrenstorfer. Available pack sizes: on request, 1g, 500mg, 5g, 10mg, 100mg, 1ml, 200mg.