1-Indancarboxylic acid 14381-42-1 1H-Indene-1-carboxylic acid, 2,3-dihydro- 2,3-Dihydro-1H-indene-1-carboxylic acid 3-09-00-02776 (Beilstein Handbook Reference) BRN 1868207 EINECS 238-355-0 Indan-1-carboxylic acid Indane-1-carboxylic acid