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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 123786Generated: November 1, 2026

Proctolin

Proctolin TFA · Proctolin,inhibit,Inhibitor · proctolin (ixodes scapularis) · Proctolin【Periplaneta americana】 · L-Arg-L-Tyr-L-Leu-L-Pro-L-Thr-OH · L-Threonine, L-arginyl-L-tyrosyl-L-leucyl-L-prolyl- · 2-[[1-[2-[[2-[[2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-hydroxybutanoicacid

https://huagongshe.com/en/chemical/123786

Proctolin molecular structure

Identifiers & Physical Properties

CAS No.57966-42-4
Molecular formulaC30H48N8O8
Average molar mass648.762 g/mol
Monoisotopic mass648.3595105 g/mol
SMILESCC(C)C[C@H](NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](N)CCCN=C(N)N)C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)O)[C@@H](C)O
InChIKeyKKUPPLMEDQDAJX-UEHMALFGSA-N
PubChem CID123786
ChEMBLCHEMBL295536
ChEBICHEBI:230990
DTXSIDDTXSID80956793

Chemical & Physical Properties

Density1.43±0.1 g/cm3(Predicted)
Storage conditionsStore at -20°C
pKa (acidity coefficient)3.28±0.10(Predicted)
Physical statePowder
ColorWhite to off-white
SolubilityDistilled water for a solution up to 2 mg/ml, otherwise we recommend using acetonitrile.
SequenceArg-Tyr-Leu-Pro-Thr

Applications & Uses

Uses

Proctolin is a neuropeptide present in insects and crustaceans.