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[1,2,4]Triazolo[1,5-d][1,2,4]triazine

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1H-1,2,3-Triazolo[4,5-d]pyridazine

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Formula:C4H3N5

5H-1,2,3-Triazolo[4,5-d]pyrimidine (9CI)

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Formula:C4H3N5

2H-1,2,3-Triazolo[4,5-d]pyrimidine (9CI)

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1H-1,2,3-Triazolo[4,5-d]pyrimidine (9CI)

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2H-1,2,3-Triazolo[4,5-b]pyrazine

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Formula:C4H3N5