| 2-((p-chlorophenyl)azo)-acetoacetic aci ethyl ester |
| 2-((p-chlorophenyl)azo)-3-oxobutyric acid ethyl ester |
| 4-chlor-phenyl-azo-acetessigester |
| 2-((4-chlorophenyl)azo)-3-oxo-butanoic aci ethyl ester |
| Butanoic acid,2-((4-chlorophenyl)azo)-3-oxo-,ethyl ester |
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