Steroids and derivatives
Medchemexpress LLC 7-methylguanosine-d3 | 00-00-0 | 98.5% | 301.29 g·mol⁻¹ | C11H13D3N5O5 | 5 MG
7-Methylguanosine-d3 is a deuterium-labeled stable isotope of 7-methylguanosine intended as a high-purity reference standard for analytical and biochemical applications. It is supplied in small-mass packages suitable for use in quantitative mass spectrometry, tracer studies, and method development. The unlabeled parent compound has reported activity against cNIIIB nucleotidase (IC50 = 87.8 ± 7.5 μM).
- High-purity deuterium-labeled isotopic standard for accurate mass spectrometry.
- Suitable as an internal standard for LC-MS or GC-MS quantitation.
- Useful for tracer studies and metabolic labeling experiments.
- Provided in small mass vials compatible with analytical workflows.
- Molecular formula C11H13D3N5O5; molecular weight 301.29 g·mol⁻¹.
Medchemexpress LLC β-estradiol-6-CMO-PEG3-biotin | 2938875-38-6 | 97.8% | 759.95 g·mol⁻¹ | C38H57N5O9S | 1 MG
β-Estradiol-6-CMO-PEG3-biotin is a biotinylated estradiol derivative used as a cleavable three-unit polyethylene glycol (PEG3) linker for antibody-drug conjugate (ADC) synthesis. It provides a hydrophilic spacer and a biotin handle to facilitate conjugation, affinity capture, and detection in downstream assays.
- Cleavable three-unit PEG linker providing hydrophilicity and spacing.
- Biotin tag enables affinity capture and detection.
- High purity (97.82%) suitable for research applications.
- Soluble in DMSO at ≥ 50 mg/mL; use freshly opened DMSO.
- Stable as a powder at -20°C for up to 3 years; limited stability in solvent as specified by manufacturer.
Medchemexpress LLC α-cholestane-d4 | 205529-74-4 | MFCD00216162 | 99.0% | C27H44D4 | 10MG
α-Cholestane-d4 is a deuterium-labeled analogue of α-cholestane used as a stable isotope internal standard and tracer in analytical workflows. It supports accurate quantitation, method development, and tracer studies in mass spectrometry and isotope-dilution assays, with high isotopic and chemical purity for reliable results.
- Deuterium-labeled internal standard for mass spectrometry
- High isotopic and chemical purity for accurate quantitation
- Suitable for isotope-dilution assays and tracer studies
- Available in small pack sizes for analytical use
- Molecular formula C27H44D4 and CAS 205529-74-4 for identification
Enzo Life Sciences 20-Hydroxyecdysone (10mg). CAS: 5289-74-7
Most widely occurring ecdysteroid in both plant and animal species. Controls cell death during metamorphosis of Drosophila melanogaster. Alternative name: beta-Ecdysone, 2beta,3beta,14alpha,20R,22R,25-Hexahydroxy-5beta-cholest-7-en-6-one, Ecdysterone. Purity: ≥95% HPLC. Solubility: Soluble in water, 100% ethanol, methanol, DMSO and acetic acid. Long Term Storage: -20°C.
Cayman Chemical Arachidonic Acid MaxSpec Sta
A quantitative analytical standard guaranteed to meet MaxSpec identity, purity, stability, and concentration specifications
Apexbio Technology LLC Prednisone 53-03-2 1g
Prednisone is a synthetic glucocorticoid which functions primarily as an agonist of the glucocorticoid receptor (GR) Upon binding to the GR prednisone induces receptor translocation into the nucleus initiating the regulation of gene expression involved in inflammation immune responses and cellular proliferation Due to its immunosuppressive mechanism prednisone is widely used as an experimental tool in biomedical studies exploring inflammatory diseases autoimmune conditions and immune signaling pathways Structurally prednisone is a corticosteroid derivative characterized by specific modifications that affect its pharmacodynamics and bioavailability In laboratory settings prednisone assists researchers in dissecting glucocorticoid-mediated physiological and molecular events evaluating receptor-ligand interactions and examining downstream signaling mechanisms in various cell-based assays and animal models
Apexbio Technology LLC Estrone 53-16-7 10g
Estrone (53-16-7) is a naturally occurring estrogen that modulates estrogen receptor-mediated signaling pathways It is primarily synthesized in ovarian and adipose tissues and participates in the regulation of estrogen-dependent cellular and physiological processes Estrone exerts its biological activity primarily through binding and activating estrogen receptors Experimental model activity type and key metric (IC50/EC50) are not specified Based on these pharmacological properties estrone holds research potential in studies of estrogen receptor activation reproductive endocrinology menopausal hormone transitions and estrogen-dependent signaling pathways and diseases
Sigma Aldrich Fine Chemicals Biosciences Ethinyl estradiol Related Compound B United States Pharmacopeia (USP) Reference Standard | 1231-96-5 | 20MG
Ethinyl estradiol Related Compound B United States Pharmacopeia (USP) Reference Standard | Mol Wt: 294.39 | 1231-96-5 | 20MG
