1H-Imidazole-5-butanoic acid, alpha-ethyl-beta-(hydroxymethyl)-1-methyl-, (S-(R*,S*))- 1H-Imidazole-5-butanoic acid, alpha-ethyl-beta-(hydroxymethyl)-1-methyl-, (alphaS,betaR)- 28406-15-7 Pilocarpic acid