4,4-Dimethyl-1,3-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazol-6-yl isopropyl ether 6-Isopropoxy-4,4-dimethyl-1,3-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazole 63777-09-3 AIDS-128738 AIDS128738 NSC297122