| Peptide Name | CAT# | Peptide Sequence |
| a-Casein (90-95) | OPIO-1-1 | Arg-Tyr-Leu-Gly-Tyr-Leu |
| Ac-Arg-Tyr-Tyr-Arg-Ile-Lys-NH2 | OPIO-1-2 | Ac-Arg-Tyr-Tyr-Arg-Ile-Lys-NH2 |
| Adrenal Peptide E, bovine | OPIO-1-3 | Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu-Trp-Trp-Met-Asp-Tyr-Gln-Lys-Arg-Tyr-Gly-Gly-Phe-Leu |
| Adrenorphin | OPIO-1-4 | Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-NH2 |
| BAM-12P | OPIO-1-5 | Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu |
| BAM-18P | OPIO-1-6 | Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu-Trp-Trp-Met-Asp-Tyr-Gln |
| BAM-22P | OPIO-1-7 | Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu-Trp-Trp-Met-Asp-Tyr-Gln-Lys-Arg-Tyr-Gly |
| Crystalline | OPIO-1-8 | Trp-Gly |
| DAGO | OPIO-1-9 | Tyr-DAla-Gly-(NMe)-Phe-Gly-ol |
| Dermorphin | OPIO-1-10 | Tyr-DAla-Phe-Gly-Tyr-Pro-Ser-NH2 |
| Kyotorphin | OPIO-1-11 | Tyr-Arg |
| Morphin, Tolerance Peptide | OPIO-1-12 | c(Leu-Gly) |
| Morphine Modulating Peptide, C-Terminal Fragment | OPIO-1-13 | Pro-Gln-Arg-Phe-NH2 |
| Nociceptin (1-13)-NH2/ Orphanin FQ | OPIO-1-14 | Phe-Gly-Gly-Phe-Thr-Gly-Ala-Arg-Lys-Ser-Ala-Arg-Lys-NH2 |
| Nociceptin / Orphanin FQ | OPIO-1-15 | Phe-Gly-Gly-Phe-Thr-Gly-Ala-Arg-Lys-Ser-Ala-Arg-Lys-Leu-Ala-Asn-Gln |
| Orphan GPCR SP9155 Agonist P518 | OPIO-1-16 | Thr-Ser-Gly-Pro-Leu-Gly-Asn-Leu-Ala-Glu-Glu-Leu-Asn-Gly-Tyr-Ser-Arg-Lys-Lys-Gly-Gly-Phe-Ser-Phe-Arg-Phe |
| Peptide B, bovine | OPIO-1-17 | Phe-Ala-Glu-Pro-Leu-Pro-Ser-Glu-Glu-Glu-Gly-Glu-Ser-Tyr-Ser-Lys-Glu-Val-Pro-Glu-Met-Glu-Lys-Arg-Tyr-Gly-Gly-Phe-Met-Arg-Phe |
| Peptide F, bovine | OPIO-1-18 | Tyr-Gly-Gly-Phe-Met-Lys-Lys-Met-Asp-Glu-Leu-Tyr-Pro-Leu-Glu-Val-Glu-Glu-Glu-Ala-Asn-Gly-Gly-Glu-Val-Leu-Gly-Lys-Arg-Tyr-Gly-Gly-Phe-Met |
| Sturgeon F | OPIO-1-19 | Phe-Gly-Gly-Phe-Met-Lys-Gly-Lys-Tyr-Gly-Tyr |
| [DAla2] Deltorphin I | OPIO-1-20 | Tyr-DAla-Phe-Asp-Val-Val-Gly-NH2 |
| [DAla2] Deltorphin II | OPIO-1-21 | Tyr-DAla-Phe-Glu-Val-Val-Gly-NH2 |
| [DArg2,Lys4]-Dermorphin (1-4), amide | OPIO-1-22 | Tyr-DArg-Phe-Lys-NH2 |
| [DArg2,Sar4] Dermorphin (1-4) | OPIO-1-23 | Tyr-DArg-Phe-Sar |
| [DArg2] Dermorphin (1-4), amide | OPIO-1-24 | Tyr-DArg-Phe-Gly-NH2 |
| [DArg2] Kyotorphin | OPIO-1-25 | Tyr-DArg |