† rufocatechuicadj.ChemistryObsoleterarerufocatechuic acid = rubinic acidn. at rubinicadj.
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1859 E. ParrishIntrod. Pract. Pharmacy (ed. 2) iii. vii. 379Rufocatechuic, rubinic acid, in the oxidized alkaline solution of the former [sc. catechin]. The tannin in krameria yields a similar red acid by spontaneous oxidation.