Biotin and derivatives

Organic heterocyclic compounds and derivatives that consist of a ureido ring and a tetrahydrothiophene ring; ureido contains the radical: NH2CONH−, and tetrahydrothiophene is a five-membered ring consisting of four carbon atoms and a sulfur atom.

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1,246 – 1,260 of 1,263 results

1,246

Medchemexpress LLC Biotin-VAD-FMK | 1135688-15-1 | ≥98.0% | 672.81 g/mol | C30H49FN6O8S | 10 MG

Biotin-VAD-FMK is a cell-permeable, irreversible, biotin-labeled caspase inhibitor used to detect and label active caspases in cell lysates. The FMK electrophile covalently modifies active caspase catalytic residues, and the biotin tag enables downstream capture or detection with streptavidin-based reagents. Common uses include activity profiling and affinity capture in apoptosis research.

Detects and labels active caspases in cell lysates.
Covalent binding via FMK electrophile for durable labeling.
Biotin tag enables streptavidin-based capture or detection.
Cell-permeable for use in intact cells and lysates.
Suitable for pull-downs, western blotting, and activity profiling.
Stable powder with recommended frozen storage for long-term retention.

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1,247

Medchemexpress LLC Pentanediamide (ibrutinib-biotin conjugate) | 1599432-18-4 | 99.7% | 1097.37 | C56H80N12O9S | 1 ML

Ibrutinib-biotin is a biotinylated chemical probe that links ibrutinib to a long-chain biotin linker for use in biochemical and cell-based assays. It enables affinity-based target engagement studies and detection of Bruton's tyrosine kinase (BTK), and is supplied in solution and solid forms for flexible experimental workflows.

Biotinylated probe for pull-down and detection assays.
Reported BTK activity with IC50 0.755-1.02 nM.
Available as a 10 mM solution in DMSO and as solid quantities.
High purity as shown by certificate of analysis (>99.6%).
Soluble in DMSO (50 mg/mL) with recommended in vivo formulations provided.
Defined storage conditions for powder and in solvent to preserve stability.

Pricing & Availability

1,248

eMolecules 55750-61-3 | A-MALEIMIDOACETIC ACID-NHS(AMAS) | AstaTech | MFCD00133523 | 252.182 | C10H8N2O6 | 97.000 | O=C(CN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 1g | 302808832

A-MALEIMIDOACETIC ACID-NHS(AMAS) | AstaTech | 55750-61-3 | MFCD00133523 | 252.182 | C10H8N2O6 | 97.000 | O=C(CN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 1g | 302808832

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1,249

Medchemexpress LLC MEDCHEMEXPRESS LLC

5000747239 AZIDO-PEG1-NHS ESTER 1G

Pricing & Availability

1,250

eMolecules 58-85-5 | D-(+)-Biotin | Apollo Scientific | MFCD00005541 | 244.310 | C10H16N2O3S | 98.000 | OC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 5g | 600856427

D-(+)-Biotin | Apollo Scientific | 58-85-5 | MFCD00005541 | 244.310 | C10H16N2O3S | 98.000 | OC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 5g | 600856427

Pricing & Availability

1,251

eMolecules 55750-61-3 | A-MALEIMIDOACETIC ACID-NHS(AMAS) | AstaTech | MFCD00133523 | 252.182 | C10H8N2O6 | 97.000 | O=C(CN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 5g | 379630447

A-MALEIMIDOACETIC ACID-NHS(AMAS) | AstaTech | 55750-61-3 | MFCD00133523 | 252.182 | C10H8N2O6 | 97.000 | O=C(CN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 5g | 379630447

Pricing & Availability

1,252

eMolecules 756525-90-3 | m-PEG8-NHS ester | ChemScene | MFCD13184969 | 509.549 | C22H39NO12 | 98.000 | COCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 100mg | 859848158

m-PEG8-NHS ester | ChemScene | 756525-90-3 | MFCD13184969 | 509.549 | C22H39NO12 | 98.000 | COCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 100mg | 859848158

Pricing & Availability

1,253

eMolecules 1353016-71-3 | DBCO-NHS ester | Chem-Impex | MFCD24386367 | 402.406 | C23H18N2O5 | 97.000 | O=C(CCC(=O)N1Cc2ccccc2C#Cc2ccccc12)ON1C(=O)CCC1=O | 250mg | 490843460

DBCO-NHS ester | Chem-Impex | 1353016-71-3 | MFCD24386367 | 402.406 | C23H18N2O5 | 97.000 | O=C(CCC(=O)N1Cc2ccccc2C#Cc2ccccc12)ON1C(=O)CCC1=O | 250mg | 490843460

Pricing & Availability

1,254

eMolecules 174569-25-6 | m-PEG12-NHS ester | Broadpharm | MFCD13184970 | 685.761 | C30H55NO16 | 95.000 | COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 500mg | 208940405

m-PEG12-NHS ester | Broadpharm | 174569-25-6 | MFCD13184970 | 685.761 | C30H55NO16 | 95.000 | COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O | 500mg | 208940405

Pricing & Availability

1,255

eMolecules 1807518-72-4 | Mal-PEG1-NHS ester | Broadpharm | MFCD26127783 | 310.262 | C13H14N2O7 | 0.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 5g | 816471161

Mal-PEG1-NHS ester | Broadpharm | 1807518-72-4 | MFCD26127783 | 310.262 | C13H14N2O7 | 0.000 | O=C(CCOCCN1C(=O)C=CC1=O)ON1C(=O)CCC1=O | 5g | 816471161