Hydroxylammonium oxalate4682-08-031 % similar 2,3-Dibromopropene513-31-531 % similar Bromoacetyl bromide598-21-031 % similar α-Phenylacrylic acid492-38-630 % similar 2-Acetamidoacrylic acid5429-56-130 % similar Oxaloacetic acid328-42-730 % similar