Product Introduction 5-Hydroxy-1-indanone is a 1-indanone derivative. Application 5-Hydroxy-1-indanone may be used in the preparation of (5-hydroxy-indan-(1E)-ylidene)-acetic acid and 5-[2-(phenyl)ethoxy]-1-indanone. It may be used as a starting material in the multi-step synthesis of 5H-indeno[1,2-c]pyridazin-5-one analogs.