Anatomical Therapeutic Chemical (ATC) classification [BR:br08303] V VARIOUS V03 ALL OTHER THERAPEUTIC PRODUCTS V03A ALL OTHER THERAPEUTIC PRODUCTS V03AN Medical gases V03AN01 Oxygen D00003 Oxygen (JP18/USP) <JP/US> Therapeutic category of drugs in Japan [BR:br08301] 7 Agents not mainly for therapeutic purpose 79 Other agents not mainly for therapeutic purpose 799 Miscellaneous 7990 Miscellaneous D00003 Oxygen (JP18/USP) Drugs listed in the Japanese Pharmacopoeia [BR:br08311] Chemicals D00003 Oxygen