29333300 - Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Alfentanil (INN), anileridine(INN), bezitramide (INN), bromazepam (INN), difenoxin(INN), diphenoxylate (INN), dipipanone(INN), fentanyl (INN), keto bemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine(INN), pethidine intermediate A, phencyc HS Code and Indian Harmonised System Code.