GS-9973 5MG. GS-9973, CAS: 1229208-44-9, Molecular Formula: C23H21N7O, Molecular Weight: 411. 5, Purity: greater than or equal to 98% by HPLC, Appearance: Pale yellow solid, Synonym: 6-(1H-indazol-6-yl)-N-(4-morpholinophenyl)imidazo[1, 2-a]pyrazin-8-amine Entospletinib, Size: 5MG