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2,3-Dimethyl-1-(4-methylphenyl)-3-pyrazolin-5-one

N,n-bis(2-hydroxyethyl)ethylenediamine

3-Methylpentanoic acid

Chloroacetic acid

L-homophenylalanine

S-carboxymethyl-l-cysteine

S-benzyl-l-cysteine

4,4-Dihydroxydiphenylmethane

2,4,4-Trihydroxybenzophenone

2-Hydroxy-4,5-dimethylacetophenone