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The phthalates all possess the same phthalic ester C6H4COCO moiety with structural differences of chain length and branching across the four plasticizer compounds.

Более расширенный контекст:
The materials contained phthalic ester compounds: dimethyl phthalate (DMP), diethyl phthalate (DEP), butyloctyl phthalate (BOP) and di-(2-ethylhexyl) phthalate (DEHP) and were prepared at 5% w/v concentration. The phthalates all possess the same phthalic ester C6H4COCO moiety with structural differences of chain length and branching across the four plasticizer compounds.

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