| Outgoing Relation(s) |
| opioid analgesic (CHEBI:35482) is a analgesic (CHEBI:35480) |
| Incoming Relation(s) |
| (R,R)-tramadol (CHEBI:75725) has role opioid analgesic (CHEBI:35482) |
| (R,R)-tramadol hydrochloride (CHEBI:75733) has role opioid analgesic (CHEBI:35482) |
| (S,S)-tramadol (CHEBI:75731) has role opioid analgesic (CHEBI:35482) |
| (S,S)-tramadol hydrochloride (CHEBI:75734) has role opioid analgesic (CHEBI:35482) |
| (1S,2R)-nortilidine (CHEBI:77839) has role opioid analgesic (CHEBI:35482) |
| p-tolylfentanyl (CHEBI:233558) has role opioid analgesic (CHEBI:35482) |
| para-methoxyfentanyl (CHEBI:233771) has role opioid analgesic (CHEBI:35482) |
| rac-nortilidine (CHEBI:77829) has role opioid analgesic (CHEBI:35482) |
| 3-methylfentanyl (CHEBI:61092) has role opioid analgesic (CHEBI:35482) |
| 3-methylthiofentanyl (CHEBI:53763) has role opioid analgesic (CHEBI:35482) |
| 4-(methylamino)antipyrine (CHEBI:73261) has role opioid analgesic (CHEBI:35482) |
| 4-chlorofentanyl (CHEBI:231308) has role opioid analgesic (CHEBI:35482) |
| 4-fluorofentanyl (CHEBI:61074) has role opioid analgesic (CHEBI:35482) |
| 4-fluoroisobutyrfentanyl (CHEBI:233683) has role opioid analgesic (CHEBI:35482) |
| 4-methoxybutyrfentanyl (CHEBI:183351) has role opioid analgesic (CHEBI:35482) |
| 4-phenylfentanyl (CHEBI:234274) has role opioid analgesic (CHEBI:35482) |
| acetylfentanyl (CHEBI:233556) has role opioid analgesic (CHEBI:35482) |
| acrylfentanyl (CHEBI:233682) has role opioid analgesic (CHEBI:35482) |
| alfentanil (CHEBI:2569) has role opioid analgesic (CHEBI:35482) |
| anileridine (CHEBI:61203) has role opioid analgesic (CHEBI:35482) |
| anileridine dihydrochloride (CHEBI:61208) has role opioid analgesic (CHEBI:35482) |
| buprenorphine (CHEBI:3216) has role opioid analgesic (CHEBI:35482) |
| buprenorphine hydrochloride (CHEBI:652822) has role opioid analgesic (CHEBI:35482) |
| butonitazene (CHEBI:234364) has role opioid analgesic (CHEBI:35482) |
| butorphanol (CHEBI:3242) has role opioid analgesic (CHEBI:35482) |
| butorphanol D-tartrate (CHEBI:3243) has role opioid analgesic (CHEBI:35482) |
| butyrfentanyl (CHEBI:233557) has role opioid analgesic (CHEBI:35482) |
| carfentanil (CHEBI:61084) has role opioid analgesic (CHEBI:35482) |
| codeine (CHEBI:16714) has role opioid analgesic (CHEBI:35482) |
| cyclopropylfentanyl (CHEBI:233606) has role opioid analgesic (CHEBI:35482) |
| DADLE (CHEBI:234245) has role opioid analgesic (CHEBI:35482) |
| desmethylprodine (CHEBI:233164) has role opioid analgesic (CHEBI:35482) |
| dextilidine (CHEBI:77822) has role opioid analgesic (CHEBI:35482) |
| dextromethadone (CHEBI:167308) has role opioid analgesic (CHEBI:35482) |
| dextromoramide (CHEBI:74274) has role opioid analgesic (CHEBI:35482) |
| dextropropoxyphene (CHEBI:51173) has role opioid analgesic (CHEBI:35482) |
| dezocine (CHEBI:4474) has role opioid analgesic (CHEBI:35482) |
| dimethylthiambutene (CHEBI:59781) has role opioid analgesic (CHEBI:35482) |
| ecgonine methyl ester (CHEBI:31529) has role opioid analgesic (CHEBI:35482) |
| eseroline (CHEBI:48845) has role opioid analgesic (CHEBI:35482) |
| etodesnitazene (CHEBI:234368) has role opioid analgesic (CHEBI:35482) |
| etonitazene (CHEBI:234361) has role opioid analgesic (CHEBI:35482) |
| etorphine (CHEBI:4912) has role opioid analgesic (CHEBI:35482) |
| fentanyl (CHEBI:119915) has role opioid analgesic (CHEBI:35482) |
| fentanyl citrate (CHEBI:31602) has role opioid analgesic (CHEBI:35482) |
| flunitazene (CHEBI:234366) has role opioid analgesic (CHEBI:35482) |
| furanylfentanyl (CHEBI:233684) has role opioid analgesic (CHEBI:35482) |
| heroin (CHEBI:27808) has role opioid analgesic (CHEBI:35482) |
| hydrocodone (CHEBI:5779) has role opioid analgesic (CHEBI:35482) |
| hydromorphone (CHEBI:5790) has role opioid analgesic (CHEBI:35482) |
| isotodesnitazene (CHEBI:234367) has role opioid analgesic (CHEBI:35482) |
| isotonitazene (CHEBI:234360) has role opioid analgesic (CHEBI:35482) |
| JWH-133 (CHEBI:146243) has role opioid analgesic (CHEBI:35482) |
| levacetylmethadol (CHEBI:6441) has role opioid analgesic (CHEBI:35482) |
| levomethadone (CHEBI:136003) has role opioid analgesic (CHEBI:35482) |
| levomethorphan (CHEBI:146176) has role opioid analgesic (CHEBI:35482) |
| lofentanyl (CHEBI:61095) has role opioid analgesic (CHEBI:35482) |
| methadone (CHEBI:6807) has role opioid analgesic (CHEBI:35482) |
| metodesnitazene (CHEBI:234370) has role opioid analgesic (CHEBI:35482) |
| metonitazene (CHEBI:234362) has role opioid analgesic (CHEBI:35482) |
| morphine (CHEBI:17303) has role opioid analgesic (CHEBI:35482) |
| morphine hydrochloride trihydrate (CHEBI:55348) has role opioid analgesic (CHEBI:35482) |
| morphine-6-hemisuccinate (CHEBI:233811) has role opioid analgesic (CHEBI:35482) |
| myrophine (CHEBI:59860) has role opioid analgesic (CHEBI:35482) |
| myrophine hydrochloride (CHEBI:59862) has role opioid analgesic (CHEBI:35482) |
| nalbuphine (CHEBI:7454) has role opioid analgesic (CHEBI:35482) |
| norfentanyl (CHEBI:62685) has role opioid analgesic (CHEBI:35482) |
| ocfentanyl (CHEBI:183384) has role opioid analgesic (CHEBI:35482) |
| ohmefentanyl (CHEBI:194294) has role opioid analgesic (CHEBI:35482) |
| oripavine (CHEBI:7782) has role opioid analgesic (CHEBI:35482) |
| oxycodone (CHEBI:7852) has role opioid analgesic (CHEBI:35482) |
| oxycodone hydrochloride (CHEBI:7859) has role opioid analgesic (CHEBI:35482) |
| pethidine (CHEBI:6754) has role opioid analgesic (CHEBI:35482) |
| pethidine hydrochloride (CHEBI:31984) has role opioid analgesic (CHEBI:35482) |
| pholcodine (CHEBI:53579) has role opioid analgesic (CHEBI:35482) |
| proglumide (CHEBI:32058) has role opioid analgesic (CHEBI:35482) |
| propoxyphene (CHEBI:8497) has role opioid analgesic (CHEBI:35482) |
| protonitazene (CHEBI:234363) has role opioid analgesic (CHEBI:35482) |
| racemethorphan (CHEBI:146177) has role opioid analgesic (CHEBI:35482) |
| remifentanil (CHEBI:8802) has role opioid analgesic (CHEBI:35482) |
| remifentanil hydrochloride (CHEBI:32091) has role opioid analgesic (CHEBI:35482) |
| SKF-10,047 (CHEBI:228203) has role opioid analgesic (CHEBI:35482) |
| SNC-80 (CHEBI:231727) has role opioid analgesic (CHEBI:35482) |
| sufentanil (CHEBI:9316) has role opioid analgesic (CHEBI:35482) |
| tetrahydrofuranylfentanyl (CHEBI:183782) has role opioid analgesic (CHEBI:35482) |
| thienylfentanyl (CHEBI:61099) has role opioid analgesic (CHEBI:35482) |
| tilidine (CHEBI:77823) has role opioid analgesic (CHEBI:35482) |
| tramadol (CHEBI:9648) has role opioid analgesic (CHEBI:35482) |
| tramadol hydrochloride (CHEBI:32250) has role opioid analgesic (CHEBI:35482) |
| Troxyca ER (CHEBI:134679) has role opioid analgesic (CHEBI:35482) |
| α-methylfentanyl (CHEBI:234468) has role opioid analgesic (CHEBI:35482) |
