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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-(PEO)3-fluorescein | (+)-Biotin-(PEO)3-fluorescein. Group: Biochemicals. Grades: Reagent Grade. Pack Sizes: 5mg. US Biological Life Sciences. | Worldwide |
| 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-4-Biotin-4 | Fluorescein. 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. CAS No. 1032732-74-3. Molecular formula: C33H32N4O8S. Mole weight: 644.7. Appearance: Orange yellow solid. Purity: 0.95. IUPACName: N-[2-[5-[(3aS, 4S, 6aR)-2-oxo-1, 3, 3a, 4, 6, 6a-hexahydrothieno[3, 4-d]imidazol-4-yl]pentanoylamino]ethyl]-3', 6'-dihydroxy-3-oxospiro[2-benzofuran-1, 9'-xanthene]-5-carboxamide. Canonical SMILES: C1[C@H]2[C@@H] ([C@@H] (S1)CCCCC (=O)NCCNC (=O)C3=CC4=C (C=C3)C5 (C6=C (C=C (C=C6)O)OC7=C5C=CC (=C7)O)OC4=O)NC (=O)N2. Density: 1.55 ± 0.1 g/ml. Catalog: ACM1032732743. |  |
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