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1-(2,4,6-trichlorophenyl)-3-(m-nitro-benzamido)-5-pyrazolone

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1-(2,4,6-trichlorophenyl)3-(m-amino-benzamido)-5-pyrazolone

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1-(2,4,6- trichlorophenyl)-3-amino-5-pyrazolone

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1-(p-nitrophenyl)-3-ethoxy-5-pyrazolone

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1-(p-nitrophenyl)-3-(1-pyrrolidino)-5-pyrazolone

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1-(p-aminophenyl)-3-(1-pyrrolidino)-5-pyrazolone

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3,4-dimethoxy aniline hydrochloride

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2-chloro-5-nitroaniline

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2,4-dichloro-3-ethyl-6-nitrophenol

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4-chloro-3-nitroanisole

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Shenyang Research Institute of Photographic materials & Chemical Industry(PCR)

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1-(2,4,6-trichlorophenyl)-3-(m-nitro-benzamido)-5-pyrazolone

1-(2,4,6-trichlorophenyl)3-(m-amino-benzamido)-5-pyrazolone

1-(2,4,6- trichlorophenyl)-3-amino-5-pyrazolone

1-(p-nitrophenyl)-3-ethoxy-5-pyrazolone

1-(p-nitrophenyl)-3-(1-pyrrolidino)-5-pyrazolone

1-(p-aminophenyl)-3-(1-pyrrolidino)-5-pyrazolone

3,4-dimethoxy aniline hydrochloride

2-chloro-5-nitroaniline

2,4-dichloro-3-ethyl-6-nitrophenol

4-chloro-3-nitroanisole