D08639  Trimebutine (INN)
         D01500  Trimebutine maleate (JP18) <JP>
         D06618  Methylnaltrexone bromide (JAN/USAN) <US>
         D02878  Alvimopan (USAN) <US>
         D10479  Naloxegol (USAN/INN)
         D10375  Naloxegol oxalate (USAN) <US>
         D08249  Naloxone (INN)
         D01340  Naloxone hydrochloride (JP18/USP) <JP/US>
         D11620  Naloxone hydrochloride dihydrate <US>
         D10188  Naldemedine (USAN/INN)
         D10478  Naldemedine tosylate (JAN/USAN) <JP/US>
         D07861  Diphenoxylate (INN)
         D03860  Diphenoxylate hydrochloride (USP)
         D08144  Loperamide (INN)
         D00729  Loperamide hydrochloride (JAN/USP) <JP/US>
         D03809  Difenoxin (USAN/INN)
         D11583  Difenoxin hydrochloride
         D07113  Loperamide oxide (INN)
         D10403  Eluxadoline (USAN/INN) <US>
         D00320  Fentanyl (JAN/USP/INN) <JP/US>
         D01399  Fentanyl citrate (JP18/USP) <JP/US>
         D10811  Fentanyl hydrochloride (JAN)
         D07122  Alfentanil (INN)
         D00835  Alfentanil hydrochloride (USP) <US>
         D05938  Sufentanil (USAN/INN)
         D00845  Sufentanil citrate (USP) <US>
         D02941  Anileridine (USP/INN)
         D02942  Anileridine hydrochloride (USP)
         D08473  Remifentanil (INN)
         D01177  Remifentanil hydrochloride (JAN/USAN) <JP/US>
         D08233  Morphine (BAN)
         D00842  Morphine sulfate (USP) <JP/US>
         D02271  Morphine hydrochloride hydrate (JP18) <JP>
         D08234  Morphine tartrate
         D08047  Hydromorphone (INN)
         D00839  Hydromorphone hydrochloride (JAN/USP) <JP/US>
         D07285  Nicomorphine (INN)
         D08273  Nicomorphine hydrochloride
         D05312  Oxycodone (USAN/INN) <US>
         D00847  Oxycodone hydrochloride (USP) <US>
         D03783  Oxycodone terephthalate (USP)
         D05462  Oxycodone hydrochloride hydrate (JP18) <JP>
         D07831  Dihydrocodeine (INN)
         D01481  Dihydrocodeine phosphate (JP18) <JP>
         D03825  Dihydrocodeine bitartrate (USP)
         D07832  Dihydrocodeine thiocyanate
         D08323  Oxymorphone (INN)
         D00844  Oxymorphone hydrochloride (USP) <US>
         D08100  Ketobemidone (INN)
         D08101  Ketobemidone hydrochloride
         D08343  Pethidine (INN)
         D01383  Meperidine hydrochloride (USP) <JP/US>
         D07809  Dextropropoxyphene (INN)
         D00482  Propoxyphene hydrochloride (USAN) <US>
         D05632  Propoxyphene napsylate (USAN)
         D00498  Pentazocine (JP18/USP/INN) <JP>
         D02111  Pentazocine lactate (USP)
         D02227  Pentazocine hydrochloride (JAN/USP) <JP>
         D07132  Buprenorphine (JAN/INN) <JP/US>
         D00836  Buprenorphine hydrochloride (JP18/USP) <JP/US>
         D03197  Butorphanol (USAN/INN)
         D00837  Butorphanol tartrate (JAN/USP) <US>
         D08246  Nalbuphine (INN)
         D00843  Nalbuphine hydrochloride (USAN) <US>
         D08597  Tilidine (INN)
         D06147  Tilidine hydrochloride (USAN)
         D08623  Tramadol (INN)
         D01355  Tramadol hydrochloride (JP18/USP) <JP/US>
         D00838  Dezocine (USAN)
         D08182  Meptazinol (INN)
         D04924  Meptazinol hydrochloride (USAN)
         D06007  Tapentadol (USAN/INN)
         D10199  Tapentadol hydrochloride (JAN) <JP/US>
         D11214  Oliceridine (USAN/INN) <US>
         D05113  Naltrexone (USAN/INN) <US>
         D02095  Naltrexone hydrochloride (USP) <US>
         D05111  Nalmefene (USAN/INN)
         D02104  Nalmefene hydrochloride <US>
         D10812  Nalmefene hydrochloride hydrate (JAN) <JP>
         D08195  Methadone (BAN)
         D02102  Methadone hydrochloride (JAN/USP) <JP/US>
         D04716  Levomethadyl acetate (USAN)
         D00840  Levomethadyl acetate hydrochloride (USAN)
         D08121  Levomethadone (INN)
         D08122  Levomethadone hydrochloride
         D07286  Diamorphine (BAN)
         D07810  Diacetylmorphine hydrochloride
         D07929  Ethylmorphine (BAN)
         D02205  Ethylmorphine hydrochloride hydrate (JP18)
         D08045  Hydrocodone (INN)
         D03725  Hydrocodone bitartrate (USP) <US>
         D04461  Hydrocodone polistirex (USAN)
         D08046  Hydrocodone hydrochloride
         D00195  Codeine (USP)
         D02101  Codeine phosphate (USP) <JP>
         D03579  Codeine polistirex (USAN)
         D03580  Codeine sulfate (USP) <US>
         D07740  Codeine hydrochloride
         D07385  Pholcodine (INN)
         D07557  O-Acetyldihydrocodeine hydrochloride
         D08247  Nalorphine (INN)
         D08248  Nalorphine hydrochloride (USP)
         D00841  Levorphanol tartrate (USP) <US>
         D01435  Ethoheptazine citrate (JAN)
         D02238  Levallorphan tartrate (JP18) <JP>
         D03156  Brifentanil hydrochloride (USAN)
         D03405  Carfentanil citrate (USAN)
         D03618  Cyclazocine (USAN/INN)
         D04764  Lofentanil oxalate (USAN)
         D04973  Methadyl acetate (USAN)
         D05048  Mirfentanil hydrochloride (USAN)
         D05217  Ocfentanil hydrochloride (USAN)
         D05631  Propiram fumarate (USAN)
         D05667  Quadazocine mesylate (USAN)
         D06189  Tonazocine mesylate (USAN)
         D06208  Trefentanil hydrochloride (USAN)
         D06268  Trimeperidine (INN)
         D06342  Xorphanol mesylate (USAN)
         D07620  Carfentanil (INN)
         D07863  Diprenorphine (INN)
         D07864  Diprenorphine hydrochloride
         D07937  Etorphine (INN)
         D08123  Levorphanol (INN)
         D10162  Samidorphan (USAN)
         D10163  Samidorphan l-malate (USAN)
         D10349  Bevenopran (USAN/INN)
         D10371  Methylsamidorphan (USAN)
         D10436  Cebranopadol (USAN/INN)
         D10612  Benzhydrocodone (USAN/INN)
         D10648  Methylsamidorphan chloride (USAN/INN)
         D10690  Axelopran sulfate (USAN)
         D10692  Benzhydrocodone hydrochloride (USAN)
         D10740  Axelopran (USAN/INN)
         D11291  Asalhydromorphone (USAN)
         D11292  Asalhydromorphone hydrochloride (USAN)
         D11424  Oxycodegol (USAN/INN)
         D11425  Oxycodegol phosphate (USAN)
         D12660  Alphacetylmethadol (INN)
         D12661  Betacetylmethadol (INN)
         D12662  Allylprodine (INN)
         D12666  Alphameprodine (INN)
         D12667  Betameprodine (INN)
         D12668  Clonitazene (INN)
         D12669  Etonitazene (INN)
         D12674  Alphamethadol (INN)
         D12675  Betamethadol (INN)
         D12676  Isomethadone (INN)
         D12678  Alphaprodine (INN)
         D12679  Betaprodine (INN)
         D12680  Etoxeridine (INN)
         D12681  Hydroxypethidine (INN)
         D12682  Furethidine (INN)
         D12683  Piminodine (INN)
         D12685  Benzethidine (INN)
         D12686  Hydromorphinol (INN)
         D12687  Levophenacylmorphan (INN)
         D12688  Phenomorphan (INN)
         D12689  Methyldihydromorphine (INN)
         D12690  Metopon (BAN)
         D12691  Methyldesorphine (INN)
         D12692  Norlevorphanol (INN)
         D12693  Phenampromide (INN)
         D12694  Diampromide (INN)
         D12696  Levomethorphan (INN)
         D12697  Morpheridin (INN)
         D12700  Acetorphine (INN)

         D08639  Trimebutine (INN)
         D01500  Trimebutine maleate (JP18) <JP>
         D08249  Naloxone (INN)
         D01340  Naloxone hydrochloride (JP18/USP) <JP/US>
         D11620  Naloxone hydrochloride dihydrate <US>
         D08144  Loperamide (INN)
         D00729  Loperamide hydrochloride (JAN/USP) <JP/US>
         D07113  Loperamide oxide (INN)
         D10403  Eluxadoline (USAN/INN) <US>
         D05312  Oxycodone (USAN/INN) <US>
         D00847  Oxycodone hydrochloride (USP) <US>
         D03783  Oxycodone terephthalate (USP)
         D05462  Oxycodone hydrochloride hydrate (JP18) <JP>
         D08100  Ketobemidone (INN)
         D08101  Ketobemidone hydrochloride
         D00498  Pentazocine (JP18/USP/INN) <JP>
         D02111  Pentazocine lactate (USP)
         D02227  Pentazocine hydrochloride (JAN/USP) <JP>
         D07132  Buprenorphine (JAN/INN) <JP/US>
         D00836  Buprenorphine hydrochloride (JP18/USP) <JP/US>
         D03197  Butorphanol (USAN/INN)
         D00837  Butorphanol tartrate (JAN/USP) <US>
         D08246  Nalbuphine (INN)
         D00843  Nalbuphine hydrochloride (USAN) <US>
         D00838  Dezocine (USAN)
         D05113  Naltrexone (USAN/INN) <US>
         D02095  Naltrexone hydrochloride (USP) <US>
         D05111  Nalmefene (USAN/INN)
         D02104  Nalmefene hydrochloride <US>
         D10812  Nalmefene hydrochloride hydrate (JAN) <JP>
         D08247  Nalorphine (INN)
         D08248  Nalorphine hydrochloride (USP)
         D06405  Nalfurafine hydrochloride (JAN/USAN) <JP>
         D11111  Difelikefalin (USAN/INN)
         D10890  Difelikefalin acetate (JAN) <JP/US>
         D01879  Eptazocine hydrobromide (JAN)
         D02238  Levallorphan tartrate (JP18) <JP>
         D03618  Cyclazocine (USAN/INN)
         D04649  Ketazocine (USAN/INN)
         D05299  Oxilorphan (USAN/INN)
         D05646  Proxorphan tartrate (USAN)
         D05667  Quadazocine mesylate (USAN)
         D05907  Spiradoline mesylate (USAN)
         D06189  Tonazocine mesylate (USAN)
         D06342  Xorphanol mesylate (USAN)
         D06395  Enadoline hydrochloride (USAN)
         D07863  Diprenorphine (INN)
         D07864  Diprenorphine hydrochloride
         D07904  Eptazocine (INN)
         D07937  Etorphine (INN)
         D11831  Aticaprant (USAN/INN)
         D12700  Acetorphine (INN)
         D12869  Navacaprant (USAN/INN)
         D12870  Navacaprant hydrochloride (USAN)