Biotin and derivatives
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.
eMolecules 756525-90-3 | m-PEG8-NHS ester | Ambeed | MFCD13184969 | 509.549 | C22H39NO12 | 98.000 | COCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 5g | 714088006
m-PEG8-NHS ester | Ambeed | 756525-90-3 | MFCD13184969 | 509.549 | C22H39NO12 | 98.000 | COCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 5g | 714088006
Apexbio Technology LLC 5-Carboxyfluorescein diacetate N-succinimidyl ester 150206-05-6 5mg
5-Carboxyfluorescein diacetate N-succinimidyl ester (CAS 150206-05-6) is a fluorescent cell-permeable dye It is designed to enable stable cell labeling by facilitating intracellular conversion and covalent attachment to cellular amines 5-Carboxyfluorescein diacetate N-succinimidyl ester exerts its activity through membrane permeation intracellular esterase-mediated cleavage of acetate groups and subsequent covalent coupling to intracellular targets resulting in persistent fluorescence through cell division Based on these properties 5-Carboxyfluorescein diacetate N-succinimidyl ester holds research potential in tracking lymphocyte migration analyzing cell proliferation and investigating cell dynamics and interactions in various in vitro and in vivo experimental models
Medchemexpress LLC DBCO-NHS ester 2 1g | 1384870-47-6 | 1 G
DBCO-NHS ester 2 is a dibenzoazacyclooctyne (DBCO)-containing N-hydroxysuccinimide (NHS) ester reagent for strain-promoted alkyne-azide cycloaddition (SPAAC). It is used to install a DBCO handle on amine-containing molecules for copper-free click conjugation to azide-functionalized partners and as a cleavable linker in bioconjugation workflows.
- Amine-reactive NHS ester for efficient coupling to primary amines.
- DBCO group enables strain-promoted copper-free click chemistry with azides.
- Suitable for bioconjugation and linker formation in antibody-drug conjugates.
- High reported purity for reproducible conjugation performance.
- Supplied as a 1 g quantity for small-scale synthesis and labeling.
Medchemexpress LLC PCSK9 Human Biotin 100ug
The PCSK9 protein is an important regulator of plasma cholesterol homeostasis affecting LDL receptor family members such as LDLR and VLDLR It promotes their intracellular degradation and enhances hepatic LDLR degradation through non-proteolytic mechanisms PCSK9 Protein Human (Biotinylated V474I G670E HEK293 Avi) is the recombinant human-derived PCSK9 protein expressed by HEK293 with C-Avi labeled tag and V474I G670E mutation
Medchemexpress LLC Bis-PEG9-NHS ester 1g | 1008402-79-6 | 1 G
Bis-PEG9-NHS ester is a homobifunctional polyethylene glycol (PEG) linker bearing two N-hydroxysuccinimide (NHS) ester groups. It reacts with primary amines to form stable amide bonds and is used for protein conjugation, PROTAC and antibody-drug conjugate (ADC) linker synthesis. Provided as a high-purity research reagent.
- Homobifunctional PEG9 spacer with two NHS ester reactive groups.
- Enables amine-targeted conjugation to proteins and small molecules.
- PEG spacer increases aqueous solubility and reduces aggregation.
- Suitable for PROTAC and ADC linker synthesis and general bioconjugation.
- High purity for consistent research results.
Medchemexpress LLC Recombinant human IGF2R protein, biotinylated | 50UG
Biotinylated recombinant human IGF2R protein (E47-M1508) is supplied as a lyophilized HEK293-expressed construct with C-terminal His and Avi tags for affinity purification and site-specific biotinylation. The product is intended for research on receptor-ligand interactions, intracellular trafficking, and related biochemical assays.
- Biotinylated recombinant protein suitable for ligand binding and trafficking studies.
- C-terminal His and Avi tags enable affinity purification and site-specific biotinylation.
- Expressed in mammalian HEK293 cells to preserve native glycosylation.
- Construct spans E47-M1508, covering relevant extracellular domains.
- Glycosylated protein with an apparent molecular weight of approximately 165-200 kDa.
- Lyophilized formulation with protectant; endotoxin level <1 EU/μg and recommended storage at -20°C.
Medchemexpress LLC PD-L1 Human Biotin 20ug
Recombinant, biotinylated human PD-L1 produced in HEK293 cells and supplied as a lyophilized 20 μg vial for research use. The protein includes C-terminal human Fc and Avi tags, is characterized for purity and molecular mass, and exhibits specific binding activity suitable for PD-1/PD-L1 interaction and immunoassay applications.
- Expressed in HEK293 mammalian cells.
- Contains C-terminal human Fc and Avi tags.
- Site-specific biotinylation via Avi tag.
- Purity greater than 95% by reducing SDS-PAGE.
- Lyophilized from 20 mM PB, 150 mM NaCl, pH 7.4.
- Predicted molecular mass 54.2 kDa; apparent 70-95 kDa by SDS-PAGE.
- Demonstrated binding activity with ED50 of 15.30 ng/mL.
- Store frozen and aliquot after reconstitution for long-term stability.
![eMolecules 2353409-91-1 | PC Azido-PEG11-NHS carbonate ester | Broadpharm993.027 | C42H68N6O21 | 0.000 | COc1cc(C(C)OC(=O)ON2C(=O)CCC2=O)c(cc1OCCCC(=O)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN=[N+]=[N-])[N+]([O-])=O | 25mg | 462125581](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502476975.JPG-250.jpg)
eMolecules 2353409-91-1 | PC Azido-PEG11-NHS carbonate ester | Broadpharm993.027 | C42H68N6O21 | 0.000 | COc1cc(C(C)OC(=O)ON2C(=O)CCC2=O)c(cc1OCCCC(=O)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN=[N+]=[N-])[N+]([O-])=O | 25mg | 462125581
PC Azido-PEG11-NHS carbonate ester | Broadpharm | 2353409-91-1993.027 | C42H68N6O21 | 0.000 | COc1cc(C(C)OC(=O)ON2C(=O)CCC2=O)c(cc1OCCCC(=O)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN=[N+]=[N-])[N+]([O-])=O | 25mg | 462125581