10099-73-7 2-Butenedioic acid, mono(2-hydroxypropyl) ester 2-Hydroxypropyl hydrogen maleate EINECS 233-244-3 MALEIC ACID, MONO(2-HYDROXYPROPYL) ESTER Mono-(2-hydroxypropyl)ester kyseliny maleinove [Czech] Mono-(2-hydroxypropyl)maleate