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18 points
DIAZINES is validvalid
DIAZINE, a chemical compound [n]
DIAZINE, any organic compound whose molecules contain a hexagonal ring of four carbon atoms and two nitrogen atoms, also DIAZIN [n]
DIAZINE, a chemical compound [n]
DIAZINE, any organic compound whose molecules contain a hexagonal ring of four carbon atoms and two nitrogen atoms, also DIAZIN [n]