5(6)-FITC

27072-45-3

3',6'-dihydroxy-6-isothiocyanato-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one

Fluorescein 5(6)-isothiocyanate; Fluorescein isothiocyanate 5- and 6- isomers

0.98

≥41.2 mg/mL in DMSO; ≥13.1 mg/mL in EtOH; insoluble in H2O

O=C(C1=C2C=C(N=C=S)C=C1)OC32C4=CC=C(O)C=C4OC5=C3C=CC(O)=C5.O=C(C6=C7C=C(N=C=S)C=C6)OC87C9=CC=C(O)C=C9OC%10=C8C=CC(O)=C%10

C21H11NO5S

389.38

Blue ice

Store at -20°C.