Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 41 Antibiotics 29 41 10 Penicillins and their derivatives with a penicillanic acid structure; salts thereof 29 41 10 00 Penicillins and their derivatives with a penicillanic acid structure; salts thereof Commodity Code Description 29 41 10 00 000 Penicillins and their derivatives with a penicillanic acid structure; salts thereof