Crosslinking, Labeling and Protein Modification
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 3ku
Collagenase from Clostridium histolyticumPurity: MW: | 9001-12-1 | MFCD00130830 | 3ku
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 1 g
Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 1 g
Broadpharm Bromoacetamido-PEG11-azide, 1g
Bromoacetamido-PEG11-azide is a bifunctional linker comprised of bromine (Br), which can be used as a leaving group for nucleophilic substitution reactions, and azide group, which can undergo copper-catalyzed Click Chemistry reactions with alkynes, DBCO and BCN. The water solubility of the molecule is increased by the PEG chain. Please contact us for GMP-grade inquiries.
Medchemexpress LLC NH2-C5-PEG4-N3-L-lysine-PEG3-N3 | 99.4% | 619.71 | C25H49N9O9 | 50 MG
NH2-C5-PEG4-N3-L-lysine-PEG3-N3 is a cleavable 7-unit PEG antibody-drug conjugate (ADC) linker containing an azide functional group, intended for research use in click chemistry conjugations. It facilitates attachment of payloads to biomolecules via copper-catalyzed azide-alkyne cycloaddition (CuAAC) or strain-promoted azide-alkyne cycloaddition (SPAAC).
- Cleavable 7-unit PEG linker suitable for ADC synthesis.
- Azide functional group for CuAAC and SPAAC click reactions.
- High purity (≈99.4%).
- Water soluble: ≥100 mg/mL.
- Appearance: colorless to light yellow liquid.
- Recommended storage: pure form at -20°C.
- Packaged in 50 mg units.
Medchemexpress LLC 4,7,10,13,16,19-hexaoxaheneicosanoic acid, 2,5-dioxo-1-pyrrolidinyl ester | 1599472-25-9 | MFCD20926374 | 98.0% | 530.52 | C23H34N2O12 | 100 MG
Mal-PEG6-NHS ester is a non-cleavable antibody-drug conjugate (ADC) linker composed of a maleimide group, a six-unit polyethylene glycol (PEG6) spacer, and an N-hydroxysuccinimide (NHS) ester that enables thiol and amine bioconjugation.
- Non-cleavable ADC linker suitable for antibody conjugation.
- Contains maleimide and NHS ester reactive groups.
- PEG6 spacer increases hydrophilicity and solubility.
- Purity 98.0% (NMR) and molecular weight ~530.52 g/mol.
- Soluble in DMSO at 100 mg/mL; may require sonication.
- Store at -20 °C and protect from light; stock solutions: -80 °C (6 months), -20 °C (1 month).
- CAS number 1599472-25-9.
Medchemexpress LLC NH2-C5-PEG4-N3-L-lysine-PEG3-N3 | 99.4% | 619.71 g/mol | C25H49N9O9 | 5 MG
A cleavable 7-unit polyethylene glycol (PEG) linker with an azide functional group used for antibody-drug conjugate synthesis and bioconjugation via click chemistry.
- Cleavable 7-unit PEG linker suitable for ADC construction.
- Azide functional group enabling copper-catalyzed and strain-promoted azide-alkyne cycloaddition.
- High purity (99.4%) for research-grade applications.
- High aqueous solubility (≥100 mg/mL) for easy handling and formulation.
- Stable as a solid at -20 °C; defined storage recommendations for solutions.
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 1g
Collagenase from Clostridium histolyticumPurity: MW: | 9001-12-1 | MFCD00130830 | 1g
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum for general use, Type I, 0.25-1.0 FALGPA units/mg solid, ≥125 CDU/mg solid | 9001-12-1 | MFCD00130830 | 5g
Collagenase from Clostridium histolyticum for general use, Type I, 0.25-1.0 FALGPA units/mg solid, ≥125 CDU/mg solidPurity: MW: | 9001-12-1 | MFCD00130830 | 5g
Sigma Aldrich Fine Chemicals Biosciences Collagenase II United States Pharmacopeia (USP) Reference Standard | 9001-12-1 | MFCD00130830 | 2X0.5ML
Collagenase II United States Pharmacopeia (USP) Reference Standard | 9001-12-1 | MFCD00130830 | 2X0.5ML
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum release of physiologically active rat pancreatic islets tested, Type V, >=1 FALGPA units/mg solid, >125 CDU/mg solid | 9001-12-1 | MFCD00130830 | 25MG
Collagenase from Clostridium histolyticum release of physiologically active rat pancreatic islets tested, Type V, >=1 FALGPA units/mg solid, >125 CDU/mg solid | 9001-12-1 | MFCD00130830 | 25MG
Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 100mg
Collagenase from Clostridium histolyticumPurity: MW: | 9001-12-1 | MFCD00130830 | 100mg
Medchemexpress LLC Azide-PEG4-VC-PAB-doxorubicin | 99.6% | 1222.25 g·mol⁻1 | C57H75N9O21 | 50 MG
Azide-PEG4-VC-PAB-doxorubicin is an antibody-drug conjugate (ADC) agent-linker conjugate that couples the cytotoxic anthracycline doxorubicin to an azide-terminated PEG4-VC-PAB linker for use in bioconjugation and ADC assembly. It is designed for click chemistry conjugation (CuAAC and SPAAC) to alkyne- or DBCO/BCN-containing partners and is supplied as a solid for research use.
![Medchemexpress LLC Ethanol, 2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]-, 1-(4-methylbenzenesulfonate) | 236754-49-7 | 98.5% | 417.48 g/mol | C17H27N3O7S | 50 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000204060.png-250.jpg)
Medchemexpress LLC Ethanol, 2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]-, 1-(4-methylbenzenesulfonate) | 236754-49-7 | 98.5% | 417.48 g/mol | C17H27N3O7S | 50 MG
Azide-PEG5-Tos is an azide-functionalized polyethylene glycol linker (PEG length = 5 units) with a tosylate leaving group, used for bioconjugation and assembly of antibody-drug conjugates. It enables copper-catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted azide-alkyne cycloaddition (SPAAC) reactions to attach payloads to alkyne-bearing molecules.
- Contains an azide moiety for click chemistry conjugations.
- Peg5 spacer provides hydrophilicity and flexibility.
- Tosylate group serves as a reactive leaving group for functionalization.
- High purity suitable for research applications.
- Soluble in DMSO at ≥100 mg/mL for convenient stock solutions.
Medchemexpress LLC Mal-PEG4-Val-Cit-PAB | 1949793-41-2 | 98.9% | 777.86 | C36H55N7O12 | 10 MG
Mal-PEG4-Val-Cit-PAB is a cleavable antibody-drug conjugate (ADC) linker containing a terminal maleimide group for thiol conjugation. The construct includes a PEG4 spacer and a valine-citrulline-PAB protease-cleavable sequence to enable enzymatic payload release after internalization.
- Cleavable valine-citrulline-PAB sequence for enzyme-triggered release.
- Maleimide terminal for efficient thiol conjugation to antibodies.
- PEG4 spacer increases solubility and reduces steric hindrance.
- High supplied purity for consistent conjugation performance.
- Soluble in DMSO; recommended storage sealed and away from moisture.
Medchemexpress LLC Amino-PEG6-amido-bis-PEG5-N3 | 1147.31 | C48H94N10O21 | 10 MG
Amino-PEG6-amido-bis-PEG5-N3 is a cleavable 11-unit polyethylene glycol (PEG) linker containing an amino terminus and an azide functional group. It is supplied as an oil and is intended for use in click-chemistry conjugations and the synthesis of antibody-drug conjugates; for research use only.
- Cleavable 11-unit PEG linker suitable for bioconjugation.
- Contains amino and azide functional groups for dual reactivity.
- Compatible with copper-catalyzed and strain-promoted azide-alkyne cycloadditions.
- Supplied as an oil; store sealed away from moisture and light.
- Available in small laboratory pack sizes for research-scale use.