Absorption and fluorescence emission spectra of 5-carboxy-X-rhodamine (5-ROX) in pH 7.0 buffer.
X491: X-rhodamine-5-(and-6)-isothiocyanate (5(6)-XRITC) *mixed isomers*
C1309: 5-(and-6)-carboxy-X-rhodamine, succinimidyl ester (5(6)-ROX, SE) *mixed isomers*
C6124: 5-carboxy-X-rhodamine, triethylammonium salt (5-ROX) *single isomer*
C6125: 5-carboxy-X-rhodamine, succinimidyl ester (5-ROX, SE) *single isomer*
C6126: 6-carboxy-X-rhodamine, succinimidyl ester (6-ROX, SE) *single isomer*
C6156: 6-carboxy-X-rhodamine (6-ROX) *single isomer*