1,1-Dimethyl-1-(2-hydroxy-2-methyl-3-butenyl)-1-methacryloylhydrazinium hydroxide inner salt 83483-15-2 Hydrazinium, 1,1-dimethyl-1-(2-hydroxy-2-methyl-3-butenyl)-1-methacryloyl-, hydroxide, inner Hydrazinium, 1,1-dimethyl-1-(2-hydroxy-2-methyl-3-butenyl)-2-(2-methyl-1-oxo-2-propenyl)-, hydroxide, inner salt