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| Product | Description | |
|---|---|---|
| Biotin-4-Fluorescein | Biotin-4-Fluorescein is used to quantitate biotin binding sites. Biotin-4-Fluorescein is a reagent that binds to avidin more readily than conventional fluorescein biotin. This bifunctional biotin-fluorescein conjugate demonstrates better binding and stronger fluorescence than biotin fluorescein. It has similar avidin-binding properties in terms of high affinity, fast association, and non-cooperative binding to avidin and streptavidin tetramers. These exceptional properties are attributed to the small size/length of the new ligand since all larger/longer biotin derivatives are known for their mutual steric hindrance and anti-cooperative binding in 4:1 complexes with avidin and streptavidin tetramers. Specific binding of this biotin-fluorescein conjugate towards avidin and streptavidin is accompanied by 84-88% quenching of ligand fluorescence. It is used for the quantitation of biotin-binding sites. Both the fluorescence and absorbance of biotin-4-fluorescein are quenched upon binding to Group: Biochemicals. Alternative Names: (3aS, 4S, 6aR) -N- [2- [ [ (3', 6'-Dihydroxy-3-oxospiro [isobenzofuran-1 (3H) , 9'- [9H] xanthen] -5-yl) carbonyl] amino] ethyl] hexahydro-2-oxo-1H-thieno [3, 4-d] imidazole-4-pentanamide. Grades: Highly Purified. CAS No. 1032732-74-3. Pack Sizes: 5mg. Molecular Formula: C??H??N?O?S, Molecular Weight: 644.69. US Biological Life Sciences. |  Worldwide |
| Biotin-(5-fluorescein)-conjugate | Biotin-(5-fluorescein)-conjugate. Uses: Designed for use in research and industrial production. Additional or Alternative Names: Biotin-4-Fluorescein,B4F,N-(Biotinylamidoethyl)-fluorescein-5-carboxamide,N-(Fluorescein-5-carbamidoethyl)biotinamide. Product Category: Fluorescein Fluorophores. Appearance: Yellow powder. CAS No. 957494-27-8. Molecular formula: C33H32N4O8S. Mole weight: 644.7. Purity: 90%+. IUPACName: 5-[2-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]ethylcarbamoyl]-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoicacid. Product ID: ACM957494278-1. Alfa Chemistry ISO 9001:2015 Certified. Categories: Biotin (5-fluorescein) conjugate. |  |
| Biotin dextran, fluorescein labeled | biotin residue B10. Product ID: 9-01625. Mole weight: Mw 40,000. Purity: 5-8 mole% biotin ~5 mol% Dansyl. Source : HA from hog skin. Reference: Histochem. Cell Biol., 105, 187, 1996; Electrophoresis, 205, 1996; Biotechniques, 122-4, 126, 1995. |  |
| (+)-Biotin-(PEO)3-fluorescein | (+)-Biotin-(PEO)3-fluorescein. Group: Biochemicals. Grades: Reagent Grade. Pack Sizes: 5mg. US Biological Life Sciences. | Worldwide |
| Dextran, biotin, lysine and fluorescein labeled | Dextran, biotin, lysine and fluorescein labeled. Product ID: 9-00636. Mole weight: Mw 10,000. Properties: Dextran labeled with fluorescein isothiocyanate. | |
| Fluorescein Biotin | Fluorescein Biotin is used as an alternative to radioactive biotin for detecting and quantitating biotin-binding sites by either fluorescence or absorbance; the the fluorescence or absorbance of Fluorescein Biotin is quenched, upon binding to avidin or streptavidin. Uses: Scientific research. Group: Fluorescent dye. CAS No. 134759-22-1. Pack Sizes: 5 mg; 10 mg. Product ID: HY-D1030. |  |
| 5-FAM-Amyloid β-Protein (1-40)-Lys(εAhx-biotinyl) amide | 5-FAM-Amyloid β-Protein (1-40)-Lys(εAhx-biotinyl) amide is fluorescent-labeled Aβ40, which may be immobilized. Synonyms: 5-FAM-beta-Amyloid (1-40)-Lys(biotin LC) amide; Fluorescein-5-carbonyl-Asp-Ala-Glu-Phe-Arg-His-Asp-Ser-Gly-Tyr-Glu-Val-His-His-Gln-Lys-Leu-Val-Phe-Phe-Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-Val-Gly-Gly-Val-Val-Lys(εAhx-biotinyl)-NH2. Grades: ≥90%. Molecular formula: C237H343N59O67S2. Mole weight: 5154.82. |  |
| 5-FITC Biotin | 5-FITC Biotin. Uses: Designed for use in research and industrial production. Additional or Alternative Names: FluoresceinBiotin. Product Category: Fluorescein Fluorophores. CAS No. 134759-22-1. Molecular formula: C42H50N6O8S2. Mole weight: 831. Purity: 0.95. IUPACName: 6-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-N-[5-[(3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-yl)carbamothioylamino]pentyl]hexanamide. Product ID: ACM134759221-1. Alfa Chemistry ISO 9001:2015 Certified. Categories: Fluorescein biotin. | |
| Patent Blue VF | Acid Blue. CAS No. 129-17-9. Product ID: 9-01623. Molecular formula: C27H31N2NaO7S2. Mole weight: 566.66. Purity: 5-8 mole% biotin ~5 mol% Fluorescein. | |
| Fluorescein dextran | fluorescent derivative. Product ID: 9-00674. Mole weight: Mw 500,000. Purity: 5-8 mole% biotin. | |
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