The 6-Aminofluorescein with the CAS registry number 51649-83-3 belongs to the product categories of Fluorescent Labels and Indicators; Fluorescent Labels Indicators. Its EINECS registry number is 257-334-7. This chemical's molecular formula is C₂₀H₁₃NO₅ and formula weight is 347.33. It is also known as Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6-amino-3',6'-dihydroxy- and Fluoresceinamine, isomer II. What's more, its IUPAC name is called 6-Amino-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one. It is yellow solid.

Physical properties about this chemical are: (1)ACD/LogP: 2.20; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.2; (4)ACD/LogD (pH 7.4): 2.17; (5)ACD/BCF (pH 5.5): 27.56; (6)ACD/BCF (pH 7.4): 25.56; (7)ACD/KOC (pH 5.5): 373.62; (8)ACD/KOC (pH 7.4): 346.48; (9)#H bond acceptors: 6; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 57.23 Å²; (13)Index of Refraction: 1.819; (14)Molar Refractivity: 91.61 cm³; (15)Molar Volume: 210.5 cm³; (16)Surface Tension: 101.1 dyne/cm; (17)Density: 1.64 g/cm³; (18)Flash Point: 381.2 °C; (19)Melting Point 285 oC (dec.); (20)Boiling Point: 706.7 °C at 760 mmHg; (21)Enthalpy of Vaporization: 107.07 kJ/mol; (22)Vapour Pressure: 1.24E-20 mmHg at 25°C

Uses of 6-Aminofluorescein: it can be used in the fluorescent antibody technique for rapid identification of pathogens as fluorescent labeling reagent for proteins.

When you are using this chemical, please be cautious about it as the following:
This chemical may cause inflammation to the skin or other mucous membranes and irritates to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact this chemical, please wear suitable protective clothing.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C2OC4(c1cc(N)ccc12)c5ccc(O)cc5Oc3cc(O)ccc34;
(2)InChI: InChI=1/C20H13NO5/c21-10-1-4-13-16(7-10)20(26-19(13)24)14-5-2-11(22)8-17(14)25-18-9-12(23)3-6-15(18)20/h1-9,22-23H,21H2;
(3)InChIKey: YOAWSYSKQHLFPM-UHFFFAOYAF;
(4)Std. InChI: InChI=1S/C20H13NO5/c21-10-1-4-13-16(7-10)20(26-19(13)24)14-5-2-11(22)8-17(14)25-18-9-12(23)3-6-15(18)20/h1-9,22-23H,21H2;
(5)Std. InChIKey: YOAWSYSKQHLFPM-UHFFFAOYSA-N.