OSI-420-d4, Free Base (Desmethyl Erlotinib-d4) Price Not Available 1mg OSI-420-d4, Free Base (Desmethyl Erlotinib-d4) Supplier Page Catalog Number R012456 Molecular Formula C21H21N3O4 CAS# 1216420-11-9 Purity ≥95% Inchi InChI=1S/C21H21N3O4/c1-3-15-5-4-6-16(11-15)24-21-17-12-19(27-8-7-25)20(28-10-9-26-2)13-18(17)22-14-23-21/h1,4-6,11-14,25H,7-10H2,2H3,(H,22,23,24)/i4D,5D,6D,11D Inchi Key KOQIAZNBAWFSQM-GTNXRJHWSA-N SMILES COCCOC1=C(C=C2C(=C1)N=CN=C2NC3=CC=CC(=C3)C#C)OCCO Size 1mg Supplier Page https://www.musechem.com/product/R012456.html