Valerohydrazide38291-82-632 % similar 3-Thiophenecarboxylic acid88-13-132 % similar Phenylmethyl hydrazinecarboxylate5331-43-131 % similar (αR)-α-Amino-3-thiopheneacetic acid1194-86-130 % similar Stearohydrazide4130-54-530 % similar Lauric hydrazide5399-22-430 % similar Octanoic hydrazide6304-39-830 % similar