… 29.41 - Antibiotics (+) . 2941.10 - Penicillins and their derivatives with a penicillanic acid structure; salts thereof 2941.20 - Streptomycins and their derivatives; salts thereof 2941.30 - Tetracyclines and their derivatives; salts thereof …
… 29.23 - Quaternary ammonium salts and hydroxides; lecithins … phosphoaminolipids, whether or not chemically defined. 2923.10 - Choline and its salts 2923.20 - Lecithins and other phosphoaminolipids 2923.30 - …
… 29.34 - Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. 2934.10 - Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure 2934.20 - Compounds containing in the structure a …
