0-19-00-00342 (Beilstein Handbook Reference) 3',6'-Diaminofluoran 3',6'-Diaminospiro(isobenzofuran-1) 3',6'-Fluorandiamine 509-72-8 BRN 0045341 Benzoic acid, o-(b-amino-3-imino-3H-xanthen-9-yl)- Fluoran, 3',6'-diamino- Spiro(isobenzofuran-1(3H),9'-xanthen)-3-one, 3',6'-diamino- o-(6-Amino-3-imino-3H-xanthen-9-yl) benzoic acid