(-)-JQ1. (-)-JQ1, A negative control for (+)-JQ1 (Cat. No. 2070), Alternate Name/Synonyms: t-Butyl-2-((6R)-4-(4-chlorophenyl)-2,3,9-trimethyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-6-yl)acetate, CAS Number: 1268524-71-5, Purity: G98% by HPLC, 1 mg