Acetylides
![Medchemexpress LLC Ethanamine, 2-[2-(2-propyn-1-yloxy)ethoxy]- | 944561-44-8 | MFCD19160595 | 99.6% | 143.18 g/mol | C7H13NO2 | 100 G](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000202861.png-250.jpg)
Medchemexpress LLC Ethanamine, 2-[2-(2-propyn-1-yloxy)ethoxy]- | 944561-44-8 | MFCD19160595 | 99.6% | 143.18 g/mol | C7H13NO2 | 100 G
Propargyl-PEG2-amine is a PEG-based bifunctional linker that contains a terminal propargyl (alkyne) group and a primary amine, designed for conjugation chemistry and synthetic applications such as antibody-drug conjugate (ADC) formation, PROTAC assembly, and click chemistry.
- PEG-2 spacer with terminal propargyl group
- Primary amine functional group for conjugation
- High purity suitable for synthesis (99.6%)
- Colorless to light yellow liquid; density 0.992 ± 0.06 g/cm3
- Compatible with copper-catalyzed azide-alkyne cycloaddition (CuAAC)
Medchemexpress LLC Propargyl-PEG8-acid | 2055014-94-1 | 98.0% | 436.49 g/mol | C20H36O10 | 100 MG
Propargyl-PEG8-acid is a propargyl-functionalized polyethylene glycol (PEG8) carboxylic acid linker designed for bioconjugation and linker chemistry. It provides a PEG8 spacer with a terminal alkyne for click chemistry and a carboxylic acid for coupling reactions; it is supplied as a high-purity solid with defined stability and storage requirements.
- Propargyl terminal alkyne suitable for copper-catalyzed click chemistry.
- Peg8 spacer improves solubility and flexibility in conjugates.
- Carboxylic acid functionality enables amide coupling and derivatization.
- High purity (approximately 98.0%) for reliable synthetic performance.
- Molecular weight 436.49 g/mol, formula C20H36O10.
- Available in small-scale packs (100 mg) and larger sizes for scale-up.
- Store at -20°C under inert atmosphere; in solvent, follow recommended cold storage times.
Medchemexpress LLC VQW-765 | 669770-29-0 | MFCD28502153 | 99.6% | 294.39 g/mol | C19H22N2O | 10 MG
VQW-765 is an orally active, selective partial agonist of the α7 nicotinic acetylcholine receptor (α7-nAChR) developed for preclinical research into anxiety and related CNS disorders. Supplied as a pre-weighed 10 mg research reagent, it is intended for use in in vitro and in vivo studies and is not for human consumption.
- Selective α7 nicotinic acetylcholine receptor partial agonist.
- Orally active compound suitable for in vivo dosing.
- High chemical purity (approximately 99.6%).
- Supplied as a pre-weighed 10 mg quantity for dosing convenience.
- Appropriate for both in vitro and in vivo pharmacology studies.
- Research use only; not for human or clinical use.
![Medchemexpress LLC Propanoic acid, 3-[2-[[2-(2-propyn-1-yloxy)ethyl]dithio]ethoxy]- | 1807503-85-0 | ≥95.0% | 264.36 g/mol | C10H16O4S2 | 50 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000203722.png-250.jpg)
Medchemexpress LLC Propanoic acid, 3-[2-[[2-(2-propyn-1-yloxy)ethyl]dithio]ethoxy]- | 1807503-85-0 | ≥95.0% | 264.36 g/mol | C10H16O4S2 | 50 MG
Cleavable two-unit polyethylene glycol (PEG) linker with a terminal propargyl (alkyne) group for click chemistry and antibody-drug conjugate (ADC) synthesis. It contains a reducible disulfide linkage and is suitable for copper-catalyzed azide-alkyne cycloaddition (CuAAC). Supplied with ≥95.0% purity; molecular weight 264.36 g/mol; CAS 1807503-85-0.
- Cleavable disulfide linker enabling cytosolic release
- Terminal alkyne for copper-catalyzed azide-alkyne cycloaddition
- Two-unit PEG spacer improves solubility and linker flexibility
- High purity suitable for conjugation reactions
- Available in multiple package sizes for research use
Medchemexpress LLC Propargyl-PEG8-NH2 | 1196732-52-1 | MFCD28334507 | ≥98.0% | 407.50 g/mol | C19H37NO8 | 1 G
Propargyl-PEG8-NH2 is a polyethylene glycol (PEG8) alkyne linker bearing a terminal primary amine. It is used as a non-cleavable linker in conjugation chemistry, including ADC and PROTAC synthesis, and as a click-chemistry building block for copper-catalyzed azide-alkyne cycloaddition (CuAAC).
- Alkyne functional group for CuAAC click reactions.
- Terminal primary amine for conjugation and linker formation.
- High purity (≥98.0%).
- Molecular weight 407.50 g/mol.
- Chemical formula C19H37NO8.
- Available in multiple package sizes, including 1 G.
Medchemexpress LLC Propargyl-PEG8-NH2 | 1196732-52-1 | MFCD28334507 | >98.0% | 407.50 g/mol | C19H37NO8 | 10 MG
Propargyl-PEG8-NH2 is an alkyne-terminated polyethylene glycol (PEG8) amine linker used for bioconjugation and linker synthesis. It provides a terminal alkyne for click chemistry and a primary amine for further derivatization, with a PEG8 spacer to improve solubility and spacing between conjugated moieties.
- Provides a terminal alkyne group for copper-catalyzed azide-alkyne cycloaddition (click chemistry).
- Contains a primary amine for amide formation and further functionalization.
- PEG8 spacer improves solubility and reduces steric hindrance.
- High chemical purity suitable for research applications.
- Colorless to light yellow liquid, convenient for solution-phase coupling reactions.
- Commonly used in PROTAC, ADC, and general bioconjugation workflows.
Medchemexpress LLC Propargyl-PEG7-NHS ester | 2093152-77-1 | MFCD29041936 | >95.0% | 489.51 g/mol | C22H35NO11 | 1 G
Propargyl-PEG7-NHS ester is an alkyne-functional PEG7 N-hydroxysuccinimide (NHS) ester used as a bifunctional linker for bioconjugation. It couples to primary amines via NHS chemistry and provides a terminal alkyne for copper-catalyzed azide-alkyne cycloaddition, making it suitable for ADC, PROTAC, and general labeling applications.
- Alkyne-functional terminal enables click chemistry.
- NHS ester reacts with primary amines for covalent coupling.
- PEG7 spacer increases solubility and provides flexibility.
- Molecular weight about 489.51 g/mol and formula C22H35NO11.
- Typical applications include ADC linkers, PROTAC synthesis, and peptide or protein labeling.
Medchemexpress LLC E -Pent-2-enal 50g
(E)-Pent-2-enal has a pungent fruity odor This compound is commonly used in the flavor and fragrance industry because of its strong aroma often described as fresh and green Furthermore (E)-Pent-2-enal can be used as an intermediate in the synthesis of various organic compounds including pharmaceuticals and agrochemicals Its unique chemical properties make it an important ingredient in many commercial products including perfumes air fresheners and cleaners
Medchemexpress LLC Propargyl-PEG8-acid | 2055014-94-1 | 98.0% | 436.49 g/mol | C20H36O10 | 1 G
Propargyl-PEG8-acid is a polyethylene glycol (PEG) based linker bearing a terminal propargyl (alkyne) group and a carboxylic acid, used for conjugation in PROTAC and antibody-drug conjugate (ADC) synthesis.
- Contains a terminal propargyl alkyne for click chemistry.
- Provides a carboxylic acid handle for amide coupling.
- Approximate molecular weight 436.49 g/mol.
- High purity (98.0%) suitable for research applications.
- Available in multiple pack sizes, including 1 G for lab-scale use.
Medchemexpress LLC 4,7,10,13,16-pentaoxanonadec-18-ynoic acid, 2,5-dioxo-1-pyrrolidinyl ester | 1393330-40-9 | MFCD22574798 | 98.0% | 401.41 g/mol | C18H27NO9 | 500 MG
Propargyl-PEG5-NHS ester is a bifunctional PEG linker reagent with an alkyne (propargyl) group for click chemistry and an N-hydroxysuccinimide (NHS) ester for amine conjugation. It is intended for laboratory bioconjugation workflows such as antibody-drug conjugate (ADC) and PROTAC synthesis.
- Contains a propargyl (alkyne) functional group for CuAAC click reactions.
- Has an NHS ester for efficient amine coupling to primary amines.
- Molecular weight 401.41 g/mol and formula C18H27NO9.
- Purity typically 98.0% as supplied.
- Supplied as a solid/liquid reagent for research use with recommended cold, light-protected storage.
eMolecules 1261791-09-6 | 2-Chloro-6-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | MFCD18393817 | 226.580 | C8H6ClF3O2 | 95.000 | OCc1c(Cl)cccc1OC(F)(F)F | 1g | 562428505
2-Chloro-6-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | 1261791-09-6 | MFCD18393817 | 226.580 | C8H6ClF3O2 | 95.000 | OCc1c(Cl)cccc1OC(F)(F)F | 1g | 562428505
eMolecules 1240257-07-1 | 2-Fluoro-4-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | MFCD16652441 | 210.128 | C8H6F4O2 | 98.000 | OCc1ccc(OC(F)(F)F)cc1F | 1g | 562454556
2-Fluoro-4-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | 1240257-07-1 | MFCD16652441 | 210.128 | C8H6F4O2 | 98.000 | OCc1ccc(OC(F)(F)F)cc1F | 1g | 562454556