Thieno[3,2-b]thiophene-2-carboxylic Acid Price Not Available 25mg Thieno[3,2-b]thiophene-2-carboxylic Acid Supplier Page Catalog Number R022765 Molecular Formula C7H4O2S2 CAS# 1723-27-9 Purity ≥95% Inchi InChI=1S/C7H4O2S2/c8-7(9)6-3-5-4(11-6)1-2-10-5/h1-3H,(H,8,9) Inchi Key GVZXSZWCZGKLRS-UHFFFAOYSA-N SMILES C1=CSC2=C1SC(=C2)C(=O)O Size 25mg Supplier Page https://www.musechem.com/product/R022765.html