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Application filed by Yung Shin Pharmaceutical IndfiledCriticalYung Shin Pharmaceutical Ind
Priority to TW82102095ApriorityCriticalpatent/TW238307B/en
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Publication of TW238307BpublicationCriticalpatent/TW238307B/en
A compound with formula (I) and its salts, (see claim 1) in which R1 is (see claim 1) R2, R3, R4 is H, X, NO2, CH3, C1~C4 alkyl, OCH3, and n is an integer of 1~4, X is a halogen.