Fluorescein 6-Isothiocyanate (isomer II) - ≥90% , CAS No.18861-78-4

CAS: 18861-78-4 Cat. No.: F141233 Peso molecular: 389.381 Número EC: 633-766-5

GRADE & PURITY ≥90%

Synonyms

AKOS015912141 | FT-0626458 | SCHEMBL160107 | HY-136957 | PD167109 | F0783 | F12301 | 3',6'-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one | 6-Isothiocyanatofluorescein | FITC-II | J-012159 | MFCD00041838 | F04-0026 | 3',6'-dihydroxy-6-i

Storage

Store at 2-8°C,Protected from light

Shipped In

Wet ice

Descripción general

Amine-Reactive Fluorescent probe for counjugation to proteins or peptides.

Emission (Em)：525nm；Excitation (Ex)：488nm

Specifications

Sinónimos

AKOS015912141 | FT-0626458 | SCHEMBL160107 | HY-136957 | PD167109 | F0783 | F12301 | 3', 6'-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3, 9'-xanthene]-1-one | 6-Isothiocyanatofluorescein | FITC-II | J-012159 | MFCD00041838 | F04-0026 | 3', 6'-dihydroxy-6-i

Especificaciones y pureza

≥90%

Mecanismos bioquímicos y fisiológicos

Fluorescent labeling reagent for proteins. Used in the fluorescent antibody technique for rapid identification of pathogens.

Condiciones de almacenamiento de almacenamiento

Store at 2-8°C, Protected from light

Enviado en

Wet ice

Este producto requiere envío en cadena de frío. Los servicios terrestres y otros servicios económicos no están disponibles.

Nota

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.

Pureza

≥90%

Nombres e identificadores

• Sonrisas canónicas: C1=CC2=C(C=C1N=C=S)C3(C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O)OC2=O
• IUPAC Name: 3',6'-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one
• InChIKey: GTQFZXYECNSNNC-UHFFFAOYSA-N
• INCHI: 1S/C21H11NO5S/c23-12-2-5-15-18(8-12)26-19-9-13(24)3-6-16(19)21(15)17-7-11(22-10-28)1-4-14(17)20(25)27-21/h1-9,23-24H
• Isómeros SMILES: C1=CC2=C(C=C1N=C=S)C3(C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O)OC2=O
• Peso molecular: 389.381
• Reaxy-Rn: 11812567
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11812567&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organoheterocyclic compounds
    • Clase Benzopyrans
      • Subclass 1-benzopyrans
        • Level5 Dibenzopyrans
          • Level6 Xanthenes

• Kingdom: Organic compounds
• Superclass: Organoheterocyclic compounds
• Clase: Benzopyrans
• Subclass: 1-benzopyrans
• Intermediate Tree Nodes: Dibenzopyrans
• Direct Parent: Xanthenes
• Alternative Parents: Diarylethers Phthalides Benzofuranones Isobenzofurans 1-hydroxy-2-unsubstituted benzenoids Lactones Isothiocyanates Carboxylic acid esters Propargyl-type 1,3-dipolar organic compounds Oxacyclic compounds Monocarboxylic acids and derivatives Organopnictogen compounds Organonitrogen compounds Organic oxides Hydrocarbon derivatives
• Molecular Framework: Aromatic heteropolycyclic compounds
• Substituents: Xanthene - Diaryl ether - Benzofuranone - Phthalide - Isobenzofuranone - Isobenzofuran - Isocoumaran - 1-hydroxy-2-unsubstituted benzenoid - Benzenoid - Carboxylic acid ester - Isothiocyanate - Lactone - Carboxylic acid derivative - Ether - Oxacycle - Organic 1,3-dipolar compound - Monocarboxylic acid or derivatives - Propargyl-type 1,3-dipolar organic compound - Hydrocarbon derivative - Organic nitrogen compound - Organonitrogen compound - Organooxygen compound - Organosulfur compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Aromatic heteropolycyclic compound
• Descripción: This compound belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring.
• External Descriptors: fluorescein isothiocyanate

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Propiedades químicas y físicas

• Sensibilidad: moisture & heat & light sensitive
• Peso molecular: 389.400 g/mol
• XLogP3: 4.800
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 1
• Exact Mass: 389.036 Da
• Monoisotopic Mass: 389.036 Da
• Topological Polar Surface Area: 120.000 Ų
• Heavy Atom Count: 28
• Formal Charge: 0
• Complexity: 668.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

Referencias

1. Lin Zhou, Hanfeng Hou, Huan Wei, Lina Yao, Lei Sun, Ping Yu, Bin Su, Lanqun Mao.  (2019)  In Vivo Monitoring of Oxygen in Rat Brain by Carbon Fiber Microelectrode Modified with Antifouling Nanoporous Membrane.  ANALYTICAL CHEMISTRY,      [PMID:30688067] [10.1021/acs.analchem.8b05658]

2. Wenbo Zhang, Yilin Zhang, Chenlu Wang, Xingji Fu, Yuan Li, Hongyu Wang, Xiuyuan Luo, Linhao Li, Yubo Fan, Zengsheng Chen.  (2025)  Silk-based multilayer coatings for anticoagulation and durability improvement in ECMO hollow fiber membranes.  Acta Biomaterialia,      [PMID:41072596] [10.1016/j.actbio.2025.10.006]