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Di-iso-butylphthalate-[d4]

Dicyclohexylphthalate-[d4]

Di-n-hexylphthalate-[d4]

Dimethylphthalate-[d6]

Di-n-pentylphthalate-[d4]

Di-n-propylphthalate-[d4]

2,4-Dichloroaniline-[13c6]

2,4-Dichlorophenol-[13c6]

3,4-Dihydroxybenzaldehyde-[13c]

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