| CAT# | Catalog Name | Abbr. | Alias |
| A01 | Acetalin | Acetalin | Opioid Receptor Antagonist;Acetalin |
| A02 | Acyl Carrier Protein Fragment | ACP | Acyl Carrier Protein;ACP;Myristoyl-ACP; |
| A03 | Adrenocorticotrophic Hormone | ACTH | ACTH; |
| A04 | ACV and Related Compounds | ACV | ACV; |
| A05 | Adrenomedulin Peptides | ADM | ADM (1-52);ADM(1-52);PAMP(1-20)NH2; |
| A06 | Agouti Related Peptides | AGRP | ;AGRP;AGRP 25-51;AGRP25-51;AGRP 54 - 82;AGRP54-82;AGRP 87-132,human ;AGRP87-132 |
| A07 | Adipokinetic Hormones | AKH | AKH; |
| A08 | Alarin Peptide | Alarin | Alarin Peptide; |
| A09 | Allatostatins | Allatostatins | Allatostatin;Dip - AST7;cockroach;Mas-AT;Mas AT |
| A10 | Alloferons | Alloferons | Alloferon; |
| A11 | Amastatins | Amastatin | Amastatin; |
| A12 | Amylin Peptides | Amylin | Pramlintide;IAPP precursor;IAPP protein;Amylin; |
| A13 | Amyloid Peptides | APP | Amyloid;APP;IAPP;SAA1;SAA2;APLP1; |
| A14 | Angiogenins | Angiogenin | angiogenin;Angiogenic factor (human adenocarcinoma HT-29); |
| A15 | Angiotensins | Angiotensins | Ang II;AngII;Ang-II; |
| A16 | Annexin | Annexin | Annexin;Calcimedins;Calelectrin;Calpactin;Chromobindins;Lipocortin |
| A17 | Atrial natriuretic factor | ANP | ANP,ANF; |
| A18 | Antennapedia Homeobox peptides | Antp | Antp;Antp-type hexapeptide;Gln-rich |
| A19 | Anti-Inflammatory Peptide | Anti-Inflammatory | Anti-Inflammatory Peptide; |
| A20 | Antioxidant Peptides | Antioxidant | Antioxidant Peptides; |