Dimethylphenol1300-71-631 % similar 3-Fluoro-o-xylene443-82-331 % similar 2,3-Dimethylphenol526-75-031 % similar Dl-histidine monohydrochloride monohydrate123333-71-131 % similar Histidine monohydrochloride monohydrate5934-29-231 % similar 4-Methylimidazole822-36-630 % similar