Azolines
Sigma Aldrich Fine Chemicals Biosciences Creatinine NISTR SRMR 914b
This Standard Reference Material (SRM) is certified as a chemical of known purity. It is intended primarily for use in the calibration and standardization of procedures used for determination of creatinine concentration and for routine evaluations of daily working standards used in these procedures. For more information please refer to the SDS and COA. SRM 914B SDSSRM 914B cert
Aobchem 4 5-Dicarboxy-1-methyl-1H-imidazole | ≥97% | CAS 19485-38-2 | C6H6N2O4 | 25g
4 5-Dicarboxy-1-methyl-1H-imidazole | ≥97% | CAS 19485-38-2 | C6H6N2O4 | 25g
Sigma Aldrich Fine Chemicals Biosciences Methimazole United States Pharmacopeia (USP) Reference Standard | 60-56-0 | MFCD00179321 | 200MG
Methimazole United States Pharmacopeia (USP) Reference Standard | Mol Wt: 114.17 | 60-56-0 | MFCD00179321 | 200MG
Biotium Antibody Labeling Kits Antibody and Protein Labeling Kits Mix n Stain Antibody Labeling Kits CF568 1/EA
Mix-n-Stain CF Dye Nanobody Thiol Labeling Kits are optimized for labeling nanobodies with bright and photostable CF dyes in 2 hours with no purification Kits tolerate common stabilizers Red fluorescent CF568 has Ex/Em at 562/583 nm One labeling of 20-50 ug Nanobody Thiol per kit
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 99.0% | 550 (average) | (C2H4O)nC3H8OS | 250 MG
m-PEG-thiol (MW 550) is a monofunctional methoxy polyethylene glycol terminated with a free thiol (-SH). It has an average molecular weight of 550 Da and is supplied as a solid for research use in surface functionalization, bioconjugation, and nanoparticle modification.
- Provides a terminal thiol for selective conjugation to maleimide or gold surfaces.
- Average molecular weight of 550 Da for controlled PEGylation.
- High purity suitable for research applications (reported ~98.98%).
- Available in lab-scale pack sizes for method development and small-batch experiments.
- Stable when stored sealed and protected from moisture; follow cold storage recommendations for solutions.
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 98.7% | 1000 (average) | (C2H4O)nC3H8OS | 100 MG
m-PEG-thiol (MW 1000) is a methoxy-terminated polyethylene glycol with a terminal thiol group used for surface modification and bioconjugation. The thiol enables covalent attachment to metal and nanoparticle surfaces, while the PEG chain provides steric stabilization and improves solubility and biocompatibility.
- Methoxy-terminated PEG with a terminal thiol functional group.
- Average molecular weight 1000 for predictable spacer length.
- Enables covalent attachment to gold and other metal surfaces.
- Provides steric stabilization and reduces nanoparticle aggregation.
- Suitable for bioconjugation of DNA, proteins, and antibodies.
- Supplied as a solid in a 100 mg unit with purity ~98.7%.
- Store protected from light; follow recommended cold storage for solutions.
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 99.0% | 550 (average) g/mol | (C2H4O)nC3H8OS | 100 MG
m-PEG-thiol (MW 550) is a methoxy-terminated polyethylene glycol with a terminal thiol group. It is supplied as a research-grade reagent for introducing thiol functionality to biomolecules or surfaces, commonly used for conjugation to gold nanoparticles and in bioconjugation chemistry. The product has an average molecular weight of 550 and is supplied with high purity for research applications.
- Provides a thiol functional group for covalent conjugation to maleimides and gold surfaces.
- Suitable for DNA thiolation and assembly of gold nanorod constructs.
- Supplied at research-grade purity for reproducible experimental results.
- Soluble in DMSO (200 mg/mL with sonication) for convenient stock preparation.
- Average molecular weight of 550 for consistent PEGylation behavior.
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 99.0% | 550 (average) | (C2H4O)nC3H8OS | 500 MG
m-PEG-thiol (average MW 550) is a methoxy-terminated polyethylene glycol with a terminal thiol group used to introduce thiol functionality onto surfaces or biomolecules. It is supplied for laboratory research and enables PEGylation and surface bioconjugation.
- Average molecular weight 550 provides a short PEG spacer
- Terminal thiol enables covalent attachment to gold, maleimide reagents, and disulfide exchange
- High reported purity suitable for research applications
- Available in small pack sizes for research workflows, e.g., 500 mg
- Store sealed at -20°C, protected from moisture