Biotin and derivatives
Medchemexpress LLC Biotin-PEG3-acid 250mg | 252881-76-8 | 447.55 g·mol⁻¹ | C19H33N3O7S | 250 MG
Biotin-PEG3-acid is a biotin-labeled PEG3 linker with a terminal carboxylic acid, supplied as a solid for use in conjugation and PROTAC linker synthesis. It provides a hydrophilic spacer arm to attach biotin to small molecules or probes, enabling affinity capture, purification, and detection workflows.
- Biotin-labeled PEG3 linker with carboxylic acid terminus.
- Suitable for coupling chemistries such as amide bond formation.
- Used in PROTAC synthesis, biotinylation, pull-downs, and detection assays.
- Molecular weight 447.55 g·mol⁻¹ and CAS 252881-76-8.
- Purity 98.0%.
- Supplied as a 250 MG solid; other sizes available.
Sigma Aldrich Fine Chemicals Biosciences Biotin | 58-85-5 | MFCD00005541 | 5g
Biotin | Purity: 99% | Mol Wt: 244.31 | 58-85-5 | MFCD00005541 | 5g
Medchemexpress LLC Iodoacetyl-LC-biotin | 93285-75-7 | MFCD00054987 | 99.2% | 510.43 g/mol | C18H31IN4O3S | 5 MG
Iodoacetyl-LC-biotin is a thiol-reactive, biotinylated electrophile reagent used for site-specific labeling and enrichment of cysteine-containing proteins. It reacts with sulfhydryl groups to form stable thioether bonds, enabling affinity capture and detection in proteomics and biochemical assays.
- Thiol-specific labeling of cysteine residues for targeted modification.
- Forms stable thioether bonds for irreversible protein labeling.
- Enables affinity enrichment and sensitive detection of modified proteins.
- Compatible with proteomics workflows and subcellular proteome analysis.
- Supplied as a solid with high purity for research applications.
Sigma Aldrich Fine Chemicals Biosciences Biotin meets USP testing specifications | 58-85-5 | MFCD00005541 | 500MG
Biotin meets USP testing specifications | Purity: 97.5-102.0% | Mol Wt: 244.31 | 58-85-5 | MFCD00005541 | 500MG
Sigma Aldrich Fine Chemicals Biosciences Biotin >=99% (HPLC), lyophilized powder | 58-85-5 | MFCD00005541 | 25G
Biotin >=99% (HPLC), lyophilized powder | Purity: >=99% (HPLC) | Mol Wt: 244.31 | 58-85-5 | MFCD00005541 | 25G
Sigma Aldrich Fine Chemicals Biosciences Biotin >=99.0% (T) | 58-85-5 | MFCD00005541 | 100MG
Biotin >=99.0% (T) | Purity: >=99.0% (T) | Mol Wt: 244.31 | 58-85-5 | MFCD00005541 | 100MG
Apexbio Technology LLC 5-Carboxyfluorescein diacetate N-succinimidyl ester 150206-05-6 10mg
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
eMolecules Biotin-PEG11-Amine | 1418022-42-0 | 1G | Purity: 98%
Broadpharm | Biotin-PEG11-Amine | 1G | 1418022-42-0 | MFCD22689140 | MW:70.091
If you are unable to find the chemical you are looking for, make sure you are logged into your fishersci.com account and click on the following link:
eMolecules Building Block Tool