SB-715992, A potent, reversible, kinesin spindle protein (KSP) inhibitor, Synonyms: (R)-N-(3-aminopropyl)-N-(1-(3-benzyl-7-chloro-4-oxo-3,4-dihydroquinazolin-2-yl)-2-methylpropyl)-4-methylbenzamide; Ispinesib; CK0238273, CAS Number: 336113-53-2, Purity: G98% by HPLC, 5 mg