“In a final concentration of 1 x 10-3 M …, methyl- bis -( beta -chloro-ethyl)-amine·HCl (MBA), and urethane inhibited the … of creatine , the methylation of nicotanamide, and conjugation of p-aminobenzoic acid with glycine, of … with glucuronic acid, and of phenol with sulfuric acid to varying degrees.”