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US 5,254,674 AGranted
Diaminoazothiophene compound and a method for preparing the same
AssigneeOsaka Gas Co., Ltd.
InventorsYasunori Yokomichi, Shinichi Tada, Hitoshi Nishino, Kenji Seki
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Abstract
A diaminoazothiophene compound represented by the formula (I): ##STR1## salts thereof or metal complexes thereof and a method for preparing the same.
Claims1
A diaminoazothiophene compound represented by the formula (I):
- ##STR5## salts thereof or metal complexes thereof.
Dependencies are inferred from the claim text.