Pyle P Pyrrolididine dithio-earhamate p-Hydroxybenzyl Isothiocyanato P-aminophenyl sodium sulfonate p-phenylene-diisothiocyanate pyrantel pamoate oral suspension p-dimethylamino-benzaldehyde Pyruvate orthophosphate dikinase P.E. in Senior Middle School Pyrus Pyrifolia C V. Pingguoli p-OH-azobenzenesulfonic acid