Protein Labeling Reagents

Vector Laboratories Quant*Tag™ Biotin Quantitation Kit

The Quant*Tag™ Biotin Kit (BDK-2000) is designed to determine the amount of free biotin in solution or the number of biotins attached to nucleic acids, proteins, or other macromolecules. This kit can be used to determine accurately the labeling efficiency of biotin-labeled molecules. Unlike conventional biotin quantitation methods like the HABA assay, no predigestion of protein or nucleic acids is required, saving time & increasing accuracy. This kit, which is more sensitive than the HABA assay, is able to detect less than 1 nmol of biotin. Quant*Tag Kit reagents chemically react w/ free or bound biotin producing a colored product that can be quantified using a spectrophotometer. The absorbance is measured in the visible spectrum allowing the use of plastic cuvettes or microtitre plates. Quick & easy to use, and the assay can be completed in 30 minutes. A biotin standard is included and the kit contains sufficient reagents to perform from 25 to 250 tests depending on assay size.

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Medchemexpress LLC MEDCHEMEXPRESS LLC

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5000431412 FAM AZIDE 6-ISOMER 5MG

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STA PHARMACEUTICAL US LLC Fmoc-L-Lys(5-FAM)-OH | 50 g | CAS 1242933-88-5 | MDL MFCD03787910

Fmoc-L-Lys(5-FAM)-OH is a Amino Acid reagent (Subcategory: Lys) sold by WuXi TIDES. Offered in 50 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1242933-88-5
- MDL: MFCD03787910
- InChIKey: ZAGGWQSWIFPNCB-DHUJRADRSA-N
- Molecular Weight: 726.738
- Molecular Formula: C42H34N2O10
- Purity: ≥95%
- Container Type: 250 mL HDPE
- Pack Size: 50 g
- Net Weight: 50 g
- Gross Weight: 89.8 g
- Commodity Code: 29322090
- Country Of Origin: China
- IUPAC: N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carbonyl)-L-lysine
- SMILES: O=C(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)N[C@@H](CCCCNC(C4=CC5=C(C=C4)C6(C7=C(OC8=C6C=CC(O)=C8)C=C(O)C=C7)OC5=O)=O)C(O)=O

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STA PHARMACEUTICAL US LLC Fmoc-L-Lys(5-FAM)-OH | 1 g | CAS 1242933-88-5 | MDL MFCD03787910

Fmoc-L-Lys(5-FAM)-OH is a Amino Acid reagent (Subcategory: Lys) sold by WuXi TIDES. Offered in 1 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1242933-88-5
- MDL: MFCD03787910
- InChIKey: ZAGGWQSWIFPNCB-DHUJRADRSA-N
- Molecular Weight: 726.738
- Molecular Formula: C42H34N2O10
- Purity: ≥95%
- Container Type: 15 mL HDPE
- Pack Size: 1 g
- Net Weight: 1 g
- Gross Weight: 7.8 g
- Commodity Code: 29322090
- Country Of Origin: China
- IUPAC: N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carbonyl)-L-lysine
- SMILES: O=C(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)N[C@@H](CCCCNC(C4=CC5=C(C=C4)C6(C7=C(OC8=C6C=CC(O)=C8)C=C(O)C=C7)OC5=O)=O)C(O)=O

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STA PHARMACEUTICAL US LLC Fmoc-L-Lys(5-FAM)-OH | 100 g | CAS 1242933-88-5 | MDL MFCD03787910

Fmoc-L-Lys(5-FAM)-OH is a Amino Acid reagent (Subcategory: Lys) sold by WuXi TIDES. Offered in 100 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1242933-88-5
- MDL: MFCD03787910
- InChIKey: ZAGGWQSWIFPNCB-DHUJRADRSA-N
- Molecular Weight: 726.738
- Molecular Formula: C42H34N2O10
- Purity: ≥95%
- Container Type: 500 mL HDPE
- Pack Size: 100 g
- Net Weight: 100 g
- Gross Weight: 160.5 g
- Commodity Code: 29322090
- Country Of Origin: China
- IUPAC: N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carbonyl)-L-lysine
- SMILES: O=C(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)N[C@@H](CCCCNC(C4=CC5=C(C=C4)C6(C7=C(OC8=C6C=CC(O)=C8)C=C(O)C=C7)OC5=O)=O)C(O)=O

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eMolecules​ BDP R6G tetrazine | Broadpharm |523.350 | C28H24BF2N7O | 0.000 | Cc1nnc(nn1)-c1ccc(CNC(=O)CCc2ccc3C=C4C=CC(c5ccccc5)=[N+]4[B-](F)(F)n23)cc1 | 1mg | 761705829

BDP R6G tetrazine | Broadpharm |523.350 | C28H24BF2N7O | 0.000 | Cc1nnc(nn1)-c1ccc(CNC(=O)CCc2ccc3C=C4C=CC(c5ccccc5)=[N+]4[B-](F)(F)n23)cc1 | 1mg | 761705829

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eMolecules​ 2736437-44-6 | Sulfo-Cy7.5 NHS ester | Broadpharm1180.460 | C49H48K3N3O16S4 | 0.000 | [K+].[K+].[K+].CN1\C(=C\C=C2/CCCC(\C=C\C3=[N+](CCCCCC(=O)ON4C(=O)CCC4=O)c4ccc5c(cc(cc5c4C3(C)C)S([O-])(=O)=O)S([O-])(=O)=O)=C2)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O | 1mg | 761705607

Sulfo-Cy7.5 NHS ester | Broadpharm | 2736437-44-61180.460 | C49H48K3N3O16S4 | 0.000 | [K+].[K+].[K+].CN1\C(=C\C=C2/CCCC(\C=C\C3=[N+](CCCCCC(=O)ON4C(=O)CCC4=O)c4ccc5c(cc(cc5c4C3(C)C)S([O-])(=O)=O)S([O-])(=O)=O)=C2)C(C)(C)c2c1ccc1c(cc(cc21)S([O-])(=O)=O)S([O-])(=O)=O | 1mg | 761705607

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eMolecules​ Cy7 Azide | Broadpharm |1083.320 | C50H62N6O13S4 | 0.000 | CN1\C(=C\C=C2/CCCC(\C=C\C3=[N+](C)c4ccc(cc4C3(C)CCCS(O)(=O)=O)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCCN=[N+]=[N-])cc2)C(C)(CCCS(O)(=O)=O)c2cc(ccc12)S(O)(=O)=O | 1mg | 713699861

Cy7 Azide | Broadpharm |1083.320 | C50H62N6O13S4 | 0.000 | CN1\C(=C\C=C2/CCCC(\C=C\C3=[N+](C)c4ccc(cc4C3(C)CCCS(O)(=O)=O)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCCN=[N+]=[N-])cc2)C(C)(CCCS(O)(=O)=O)c2cc(ccc12)S(O)(=O)=O | 1mg | 713699861

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eMolecules​ TAMRA-Azide-PEG-Desthiobiotin | Broadpharm |1144.338 | C57H81N11O14 | 93.000 | C[C@@H]1NC(=O)N[C@@H]1CCCCCC(=O)NCCOCCOCCOCCNC(=O)CCN(CCOCCOCCOCCN=[N+]=[N-])C(=O)CCNC(=O)c1ccc(c(c1)C([O-])=O)-c1c2ccc(cc2oc2cc(ccc12)=[N+](C)C)N(C)C | 1mg | 795361329

TAMRA-Azide-PEG-Desthiobiotin | Broadpharm |1144.338 | C57H81N11O14 | 93.000 | C[C@@H]1NC(=O)N[C@@H]1CCCCCC(=O)NCCOCCOCCOCCNC(=O)CCN(CCOCCOCCOCCN=[N+]=[N-])C(=O)CCNC(=O)c1ccc(c(c1)C([O-])=O)-c1c2ccc(cc2oc2cc(ccc12)=[N+](C)C)N(C)C | 1mg | 795361329

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eMolecules​ 2714419-16-4 | Tetra-sulfo-Cy7 DBCO | Broadpharm1259.530 | C65H70N4O14S4 | 0.000 | CC1(C)\C(=C/C=C2\CCCC(\C=C\C3=[N+](CCCS(O)(=O)=O)c4ccc(cc4C3(C)C)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCC(=O)N3Cc4ccccc4C#Cc4ccccc34)cc2)N(CCCS(O)(=O)=O)c2ccc(cc12)S(O)(=O)=O | 1mg | 795361773

Tetra-sulfo-Cy7 DBCO | Broadpharm | 2714419-16-41259.530 | C65H70N4O14S4 | 0.000 | CC1(C)\C(=C/C=C2\CCCC(\C=C\C3=[N+](CCCS(O)(=O)=O)c4ccc(cc4C3(C)C)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCC(=O)N3Cc4ccccc4C#Cc4ccccc34)cc2)N(CCCS(O)(=O)=O)c2ccc(cc12)S(O)(=O)=O | 1mg | 795361773

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eMolecules​ IR 750 Maleimide | Broadpharm |1123.330 | C53H62N4O15S4 | 0.000 | CC1(C)\C(=C/C=C2\CCCC(\C=C\C3=[N+](CCCS(O)(=O)=O)c4ccc(cc4C3(C)C)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCN3C(=O)C=CC3=O)cc2)N(CCCS(O)(=O)=O)c2ccc(cc12)S(O)(=O)=O | 1mg | 713700019

IR 750 Maleimide | Broadpharm |1123.330 | C53H62N4O15S4 | 0.000 | CC1(C)\C(=C/C=C2\CCCC(\C=C\C3=[N+](CCCS(O)(=O)=O)c4ccc(cc4C3(C)C)S([O-])(=O)=O)=C2c2ccc(CCCCC(=O)NCCN3C(=O)C=CC3=O)cc2)N(CCCS(O)(=O)=O)c2ccc(cc12)S(O)(=O)=O | 1mg | 713700019

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eMolecules​ 1638544-48-5 | BP Fluor 594 NHS Ester | Broadpharm819.850 | C39H37N3O13S2 | 0.000 | CN1c2cc3Oc4cc5=[N+](C)C(C)(C)C=C(CS([O-])(=O)=O)c5cc4=C(c4ccc(cc4C(O)=O)C(=O)ON4C(=O)CCC4=O)c3cc2C(CS(O)(=O)=O)=CC1(C)C | 1mg | 599128688

BP Fluor 594 NHS Ester | Broadpharm | 1638544-48-5819.850 | C39H37N3O13S2 | 0.000 | CN1c2cc3Oc4cc5=[N+](C)C(C)(C)C=C(CS([O-])(=O)=O)c5cc4=C(c4ccc(cc4C(O)=O)C(=O)ON4C(=O)CCC4=O)c3cc2C(CS(O)(=O)=O)=CC1(C)C | 1mg | 599128688

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eMolecules​ MB 594 NHS Ester | Broadpharm |941.010 | C42H44N4O15S3 | 0.000 | CN(CCS(O)(=O)=O)C(=O)c1cc(ccc1C1=c2cc3C(CS([O-])(=O)=O)=CC(C)(C)[N+](C)=c3cc2Oc2cc3N(C)C(C)(C)C=C(CS(O)(=O)=O)c3cc12)C(=O)ON1C(=O)CCC1=O | 1mg | 713699924

MB 594 NHS Ester | Broadpharm |941.010 | C42H44N4O15S3 | 0.000 | CN(CCS(O)(=O)=O)C(=O)c1cc(ccc1C1=c2cc3C(CS([O-])(=O)=O)=CC(C)(C)[N+](C)=c3cc2Oc2cc3N(C)C(C)(C)C=C(CS(O)(=O)=O)c3cc12)C(=O)ON1C(=O)CCC1=O | 1mg | 713699924

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Lumiprobe Sulfo-Cyanine7 azide, 1 mg

A water-soluble NIR dye azide for Click Chemistry. Sulfo-Cyanine7 is a cyanine dye, an analog of Cy7 with improved photophysical properties. This dye is a perfect choice for NIR imaging studies in live organisms.

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Medchemexpress LLC FAM azide, 6-isomer | 1386385-76-7 | MFCD29912889 | 99.8% | 10 MG

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FAM azide, 6-isomer is a fluorescein-derived azide labeling reagent used for fluorescent tagging and bioconjugation via click chemistry. It offers a bright fluorescein signal and an azide functional group for efficient conjugation to alkyne-containing molecules.

• Fluorescent fluorescein-based dye with azide functional group.
• Compatible with copper-catalyzed azide-alkyne cycloaddition (CuAAC).
• Compatible with strain-promoted azide-alkyne cycloaddition (SPAAC) with DBCO/BCN reagents.
• Supplied as a solid; solution variants in DMSO are also available from some suppliers.
• Molecular weight 458.42 and CAS 1386385-76-7; high purity for labeling applications.
• Available in small pack sizes suitable for research-scale labeling.

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