37156-72-2 GTP-Gamma-32P Guanosine 5'-(tetrahydrogen triphosphate-P''-32P) (9CI) Guanosine triphosphate-gamma-32P (7CI) [gamma-32P]GTP guanosine, 5'-(tetrahydrogen triphosphate-P''-32P) guanosine, 5'-(tetrahydrogen triphosphate-gamma-32P)