OSI-906 (Linsitinib) OSI-906 (Linsitinib) Synonyms: OSI 906;cis-3-[8-Amino-1-(2-phenyl-7-quinolinyl)imidazo[1,5-a]pyrazin-3-yl]-1-methylcyclobutanol;OSI-906AA;OSI906; CAS NO.: 867160-71-2 Formula: C26H23N5O Weight: 421.4937