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US4621046A Pyrazolo(1,5-B)-1,2,4-triazole derivatives 失效
吡唑(1,5-B)-1,2,4-三唑衍生物

Pyrazolo(1,5-B)-1,2,4-triazole derivatives
摘要:
A novel pyrazolo[1,5-b]-1,2,4-triazole derivative represented by the general formula (I) is described. ##STR1## wherein R.sub.1 and R.sub.2 which may be the same or different, each represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon coupling; and Y represents a hydrogen atom or an aralkyl group.
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