36175-05-0 4,4'-Pyridylmethylene)diphenol bis(dihydrogen phosphate) tetrasodium salt Natrii picofosfas Picofosfate de sodium Picofosfato sodico Sodium picofosfate Sodium picofosfate [INN] Tetrasodium 4,4'-(2-Pyridylmethylen)diphenyl-bis(phosphate)