acetic anhydride
Isonitrosoacetylacetone
3-phenylazo-pentane-2,4-dione
2-Acetamino-2-acetyl-4.5-diphenyl-cyclohexen-(5)-on-(1)
1-Acetamino-1.1-diacetyl-3-phenyl-butyrophenon
1-Acetamino-1-(p-methoxyphenylhydrazono)-aceton
N2,5,7-trimethyl-3-(phenylsulfonyl)pyrazolo[1,5-a]pyrimidine-2,6-diamine
N-(5,7-dimethyl-2-methylamino-3-phenylsulfonylpyrazolo[1,5-a]pyrimidin-6-yl)acetamide