HYDROXYLAMINE azinous acid 13408-29-2 7803-49-8 CHEBI:15429 H2NHO Hydroxylamin [NH2OH] dihydridohydroxidonitrogen oxyammonia 467804_ALDRICH 438227_ALDRICH Hydroxylamine solution 5470-11-1(HCL) AIDS-088783 AIDS088783 EINECS 232-259-2 HSDB 579 Oxammonium 55458_FLUKA Lopac0_000637 C00192 NH2OH hydroxyamine Nitroxide Lopac-H-9876 NCGC00015527-01 HOA HYDROXYAMINO GROUP