DBCO NHS ester

Cat. # Quantity Price Lead time
34720 10 mg $60.00 in stock
44720 25 mg $95.00 in stock
54720 50 mg $145.00 in stock
64720 100 mg $210.00 in stock
94720 1 g $1190.00 in stock
K4720 5 g $3570.00 in stock
N4720 25 g please inquire 21 days

Dibenzocyclooctyne (ADIBO, DBCO) is one of the most reactive cycloalkynes for strain promoted alkyne azide cycloaddition (spAAC) – a copper free Click chemistry reaction.

This is an amine-reactive NHS ester that provides easy attachment of the reactive moiety to almost any primary or secondary amine group, such as that of protein, peptide, or small molecule amine.

DBCO reacts instantly with azides. The rate of the reaction is much higher than that of copper-catalyzed reaction, and reactions with many other cyclooctynes. Unlike some other cyclooctynes, DBCO does not react with tetrazines - this allows to carry out orthogonal conjugation of azides with DBCO, and trans-cyclooctenes with tetrazines.

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Sulfo-Cyanine7.5 is a near infrared fluorophore similar to indocyanine green (ICG), but possessing higher fluorescence quantum yield. The dye is very hydrophilic and water soluble. The reagent is very useful for the labeling of biomolecules for in vivo imaging. This is an alkyne for copper catalyzed Click chemistry.

Cyanine7.5 carboxylic acid

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Cyanine5.5 azide

Far red / near infrared fluorescent Cyanine5.5 dye derivative for Click Chemistry.

General properties

Appearance: off white solid
Mass spec M+ increment: 315.1
Molecular weight: 430.45
CAS number: 1384870-47-6
Molecular formula: C25H22N2O5
IUPAC name: 6-{2-Azatricyclo[10.4.0.04,9]hexadeca-1(16),4,6,8,12,14-hexaen-10-yn-2-yl}-6-oxohexanamide
Solubility: good in DCM, DMF, DMSO
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications

Product citations

  1. Adams, M.R.; Moody, C.T.; Sollinger, J.L.; Brudno, Y. Extracellular Matrix-Anchored Click Motifs for Specific Tissue Targeting. Molecular Pharmaceutics, 2020, 17(2), 392–403. doi: 10.1021/acs.molpharmaceut.9b00589
  2. Alshanski, I.; Blaszkiewicz, J.; Mervinetsky, E.; Rademann, J.; Yitzchaik, S.; Hurevich, M. Sulfation Patterns of Saccharides and Heavy Metal Ions Binding. Chemistry, 2019, 25(52), 12083–12090. doi: 10.1002/chem.201901538
  3. Andersen, V.L.; Vinther, M.; Kumar, R.; Ries, A.; Wengel, J.; Nielsen, J.S.; Kjems, J. A self-assembled, modular nucleic acid-based nanoscaffold for multivalent theranostic medicine. Theranostics, 2019, 9(9), 2662–2677. doi: 10.7150/thno.32060
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