Biotin and derivatives
Medchemexpress LLC Alexa fluor 647 NHS ester | 1620475-28-6 | 95.0% | 942.06 | 5 MG
Alexa fluor 647 NHS ester can be used to label Alexa fluor 647 to the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. It is for research use only and not sold to patients.
- Used to label primary amines
- Suitable for proteins, amine-modified oligonucleotides, and other amine-containing molecules
- For research use only
Medchemexpress LLC Cyanine5.5 NHS ester (tetrafluoroborate) | 2375105-86-3 | 767.66 | 5 MG
Cyanine5.5 NHS ester tetrafluoroborate is a member of the cyanine dye series, serving as a common fluorescent marker for biomolecules. It can interact with biomolecules and may bind to double-helical DNA through intercalation, exhibiting enhanced fluorescence upon binding.
- Common fluorescent marker for biomolecules.
- Interacts with biomolecules.
- Binds to double-helical DNA through intercalation, exhibiting enhanced fluorescence.
Medchemexpress LLC Mal-PEG12-NHS ester | 2669737-09-9 | MFCD31811553 | 97.0% | C35H58N2O18 | 10MG
Mal-PEG12-NHS ester is a heterobifunctional PEG12 linker bearing a maleimide and an N-hydroxysuccinimide (NHS) ester. It enables efficient, site-selective conjugation of sulfhydryl-containing molecules to primary amines through a hydrophilic PEG12 spacer, and is commonly used in PROTAC synthesis and general bioconjugation workflows. Molecular weight ≈794.84 g·mol⁻¹; CAS 2669737-09-9; typical purity ≈97%.
- Heterobifunctional maleimide-NHS chemistry for thiol-to-amine conjugation.
- PEG12 spacer increases solubility and reduces steric hindrance.
- Suitable for PROTAC linker synthesis and general bioconjugation.
- High purity (~97%) for reliable analytical and preparative use.
- Available in small-scale quantities for research applications.
eMolecules 2231747-18-3 | Medchem Express | N-piperidine Ibrutinib (hydrochloride) | 5mg | 600899891 | HY-130983 | 422.92 | C22H23ClN6O
Ambeed | 4-(Diphenylphosphino)benzaldehyde | 100mg | 633419231 | A844008 | 5068-18-8 | MFCD26743564 | 290.302 | C19H15OP
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Medchemexpress LLC Propanoic acid, 3-(2-azidoethoxy)-, 2,5-dioxo-1-pyrrolidinyl ester | 1807530-06-8 | 99.8% | C9H12N4O5 | 100 MG
Azido-PEG1-NHS ester is a PEG-based PROTAC linker utilized in the synthesis of PROTACs. It functions as a click chemistry reagent, containing an Azide group, which allows it to undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) reactions with alkyne-containing molecules. It can also participate in strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules possessing DBCO or BCN groups.
- Functions as a PEG-based PROTAC linker
- Used in PROTAC synthesis
- Acts as a click chemistry reagent
- Contains an azide group for chemical reactions
- Undergoes copper-catalyzed azide-alkyne cycloaddition (CuAAc) with alkyne-containing molecules
- Participates in strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules possessing DBCO or BCN groups
Medchemexpress LLC Nsp-sa-nhs | 199293-83-9 | 99.7% | 681.73 | C32H31N3O10S2 | 10 MG
Acridinium ester reagent for chemiluminescent labeling in immunoassays. It is provided as a high-purity solid for research use and is intended to enable sensitive detection when conjugated to analytes in chemiluminescent assay workflows.
- Used for chemiluminescent immunoassay labeling.
- High purity (≈99.7%) for sensitive detection.
- Molecular weight 681.73 g·mol-1 and formula C32H31N3O10S2.
- CAS number 199293-83-9 for unambiguous identification.
- Supplied in milligram quantities suitable for conjugation workflows.
- Store sealed, protected from moisture and light, preferably at -20°C.
Medchemexpress LLC Azido-PEG5-NHS ester | 1433996-86-1 | ≥98.0% | C17H28N4O9 | 50 MG
Azido-PEG5-NHS ester is a PEG-based PROTAC linker used in the synthesis of PROTACs. This compound functions as a click chemistry reagent due to its azide group, enabling copper-catalyzed azide-alkyne cycloaddition (CuAAc) reactions with alkyne-containing molecules. It also facilitates strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups, leveraging the ubiquitin-proteasome system for selective protein degradation.
- Used in the synthesis of PROTACs
- Functions as a click chemistry reagent
- Enables copper-catalyzed azide-alkyne cycloaddition (CuAAc)
- Participates in strain-promoted alkyne-azide cycloaddition (SPAAC)
- Enables targeted protein degradation
![eMolecules 2578-85-0 | Z-D-Phe-ONp | Combi-Blocks | MFCD00069875 | 420.421 | C23H20N2O6 | 95.000 | [O-][N+](=O)c1ccc(OC(=O)[C@@H](Cc2ccccc2)NC(=O)OCc2ccccc2)cc1 | 1g | 117565853](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502191172.JPG-250.jpg)
eMolecules 2578-85-0 | Z-D-Phe-ONp | Combi-Blocks | MFCD00069875 | 420.421 | C23H20N2O6 | 95.000 | [O-][N+](=O)c1ccc(OC(=O)[C@@H](Cc2ccccc2)NC(=O)OCc2ccccc2)cc1 | 1g | 117565853
Z-D-Phe-ONp | Combi-Blocks | 2578-85-0 | MFCD00069875 | 420.421 | C23H20N2O6 | 95.000 | [O-][N+](=O)c1ccc(OC(=O)[C@@H](Cc2ccccc2)NC(=O)OCc2ccccc2)cc1 | 1g | 117565853
