PTP1B-IN-26 (Compound 7a) is a derivative of phenylthiosemicarbazide‐phenoxy‐1,2,3‐triazole‐N‐phenylacetamide. PTP1B-IN-26 is an inhibitor of protein tyrosine phosphatase 1B ( PTP-1B ). PTP1B-IN-26 is a competitive inhibitor. PTP1B-IN-26 can be used to research in type 2 diabetes.