Biotin and derivatives
Medchemexpress LLC Bis-PEG30-NHS ester | 1633.81 | 25 MG
Bis-PEG30-NHS ester is a non-cleavable 30-unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
- Target: ADC linker
- Pathway: Antibody-drug conjugate/ADC related
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.
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.