Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital (INN), cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), secbutabarbital (INN), secobarbital (INN), and vinylbital (INN); salts thereof.
HS codes falls under this category.