Synonyms: Spiro[2H-1-benzopyran-2,2'-indoline],5'-methoxy-1',3',3'-trimethyl-6-nitro- (8CI);5-Methoxy-1,3,3-trimethyl-6'-nitrospiro[indoline-2,2'-[2H]chromene];5-Methoxy-6'-nitro-1,3,3-trimethylspiro[indoline-2,2'-[2H]chromene];5'-Methoxy-6-nitro-1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-indoline];Chroma 88; Chroma Dye 88