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All answers having "Chemical compounds" as clue:

5 Character Answers:

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ACIDS

ENOLS

IMIDS

OXIDS



6 Character Answers:

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AMIDES

AMINES

DIENES

ESTERS

IMIDES

IMINES

OXIDES



7 Character Answers:

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BORINES

HALITES

IODIDES

ISOMERS



8 Character Answers:

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OZONIDES