(2R,3R)-2,3-Dihydroxybernsteinsaeure 2,3-Dihydrobutanedioic acid 2,3-Dihydroxysuccinic acid 526-83-0 Acidum tartaricum BUTANEDIOIC ACID, 2,3-DIHYDROXY- L-1,2-Dihydroxyethan-1,2-dicarbonsaeure Tartaric acid Tartrate Weinsteinsaeure