Pentynoic acid STP ester

Cat. # Quantity Price Lead time
30720 10 mg $110.00 21 days
40720 25 mg $210.00 in stock
50720 50 mg $410.00 in stock
60720 100 mg $695.00 5 days

This water soluble alkyne activated ester reagent is used for the attachment of alkyne group to variois biomolecules such as proteins, and peptides. Amino-DNA, and other amines can be used as well. Since natural proteins do not contain alkynes, but almost always contain amines (lysines), this molecule is an "adaptor" to turn natural amines into alkynes.

Use this product to enable any of your proteins for Click Chemistry.

This is an STP (sulfotetrafluorophenyl) ester. STP esters are similar to NHS esters, but possess higher hydrophilicity, and water solubility. It works fine in pure aqueous reactions without addition of organic co-solvent, and is best suited for the modification of proteins.

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TAMRA amine, 5-isomer

TAMRA (tetramethylrhodamine) dye, pure 5-isomer, with an amine group for the conjugation with electrophilic reagents (NHS esters, epoxides, etc).

THPTA ligand

THPTA is a water soluble ligand for Cu(I) catalyzed Click chemistry. The ligand stabilizes copper in its Cu(I) oxidation state. Due to high aqueous solubility, reactions with this ligand do not require an organic co-solvent.

General properties

Appearance: colorless solid
Mass spec M+ increment: 80.0
Molecular weight: 348.20
CAS number: 1807530-14-8
Molecular formula: C11H5F4NaO5S
IUPAC name: 4-​Pentynoic acid, 2,​3,​5,​6-​tetrafluoro-​4-​sulfophenyl ester, sodium salt
Solubility: good in water
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 24 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. Antonov, S.A.; Novosadova, E.V.; Kobylansky, A.G.; Tarantul, V.Z.; Grivennikov, I.A. A Hybrid Detection Method Based on Peroxidase-mediated Signal Amplification and Click Chemistry for Highly Sensitive Background-free Immunofluorescent Staining. Journal of Histochemistry & Cytochemistry, 2019, 67(10), 771–782. doi: 10.1369/0022155419864113
  2. Jandl, B.; Sedghiniya, S.; Carstens, A.; Astakhova, K. Peptide–Fluorophore Hydrogel as a Signal Boosting Approach in Rapid Detection of Cancer DNA. ACS Omega, 2019, 4(9), 13889–13895. doi: 10.1021/acsomega.9b01586
  3. Samuelsen, S.V.; Maity, A.; Nybo, M.; Macaubas, C.; Lønstrup, L.; Balboni, I.M.; Mellins, E.D.; Astakhova, K. Novel Phospholipid-Protein Conjugates Allow Improved Detection of Antibodies in Patients with Autoimmune Diseases. PLoS One, 2016, 11(6), e0156125. doi: 10.1371/journal.pone.0156125
  4. Maity, A.; Macaubas, C.; Mellins, E.; Astakhova, K. Synthesis of Phospholipid-Protein Conjugates as New Antigens for Autoimmune Antibodies. Molecules, 2015, 20(6), 10253–10263. doi: 10.3390/molecules200610253
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