Isotopically Labeled Compounds
Cayman Chemical (±)-Climbazole-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 1185117-79-6, 1 mg
An internal standard for the quantification of climbazole by GC- or LC-MS
Cambridge Isotope Laboratories L-LYSINE:2HCL (3,3,4,4,5,5,6,6-D8, 98%), 0.25 G
L-LYSINE:2HCL (3,3,4,4,5,5,6,6-D8, 98%), 0.25 G
American Radiolabeled Chemicals Inc 33P AS ORTHOPHOS ACID 1MCI
PHOSPHORUS-33 AS ORTHOPHOSPHORIC ACID(H3PO4); 1mCi; Specific Activity: 3000 Ci/mmol 111 TBq/mmol; AMERICAN RADIOLABELED CHEMICALS INC mfg# ARP-0133-1
Medchemexpress LLC 5α-cholestane-2,2,3,3,4,4-d6 | 358731-18-7 | MFCD01861631 | >98.0% | C27H42D6 | 10MG
5α-Cholestane-d6 is the deuterium-labeled (d6) analog of 5α-cholestane supplied as an isotope-labeled reference standard for analytical and synthetic applications. It is intended for use as an internal standard in mass spectrometry, for tracer studies, and for synthetic chemistry where a high-purity, isotopically enriched cholestane derivative is required.
- Deuterium-labeled standard (d6) for isotope dilution and tracing.
- High chemical purity (>98.0%) suitable for analytical use.
- Isotopic enrichment approximately 95 atom % D for clear mass shift.
- Molecular formula C27H42D6; molecular weight 378.71.
- Provided in small quantities appropriate for reference and analytical workflows.
Medchemexpress LLC 4-Nonylphenol-d5 | 358730-95-7 | MFCD01861612 | 99.2% | 225.38 g·mol⁻¹ | C15H19D5O | 5 MG
4-Nonylphenol-d5 is the deuterium-labeled analog of 4-nonylphenol used as an internal standard or tracer in analytical and environmental studies. It is supplied as a white to off-white solid with high isotopic purity and is suitable for quantification of nonylphenol residues by mass spectrometry-based methods.
- Deuterium-labeled internal standard for analytical assays.
- High purity for accurate quantification.
- Soluble in DMSO at 100 mg/mL; may require ultrasonic agitation.
- Stable powder storage at -20°C for extended shelf life.
- White to off-white solid suitable for preparation of standards.
Medchemexpress LLC Aprocitentan-d4 | 1103522-45-7 | >98.0% | 550.22 g/mol | C16H10D4Br2N6O4S | 10 MG
Aprocitentan-d4 is a deuterium-labeled analogue of aprocitentan provided as a stable-isotope reference material for research and analytical applications. It is intended for use as an internal standard in quantitative mass spectrometry and for pharmacokinetic and metabolic studies where isotopically labeled references are required.
- Deuterium-labeled (d4) analogue for mass spectrometry
- Suitable as an internal standard for quantitative LC-MS/MS assays
- Intended for research and analytical applications
- Useful in pharmacokinetic and metabolic studies
- Offered in small-mass quantities suitable for analytical workflows
Medchemexpress LLC Myristic acid-d5 | 327077-03-2 | MFCD03428167 | 98.0% | 233.40 | C14H23D5O2 | 10 MG
Myristic acid-d5 is a deuterium-labeled derivative of myristic acid used as a stable isotope tracer and internal standard for analytical chemistry. Supplied as a white to off-white solid, it is suitable for quantitative analysis by NMR, GC-MS, and LC-MS and intended for research use only.
- Stable isotope labeled (d5) tracer for analytical methods.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- High purity: 98.0%.
- Supplied as a solid in a 10 MG package.
- Storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months).
Medchemexpress LLC Bicarbonate-13C sodium | 87081-58-1 | MFCD00084061 | 98.0% | 85.00 | 13CHNaO3 | 50 MG
Bicarbonate-13C sodium is the 13C-enriched form of sodium bicarbonate supplied for laboratory and analytical use. It functions as an inorganic buffering agent and a stable isotope tracer for metabolic, biochemical, and NMR applications. Handle and store under dry conditions to minimize decomposition and preserve isotopic integrity.
- 13C-enriched bicarbonate for isotope tracing and NMR studies
- Provides pH buffering and culture medium stabilization
- Applicable to biochemical assays and metabolic experiments
- Hygroscopic; store sealed and protect from moisture
- Provided in small research pack sizes suitable for laboratory use
Medchemexpress LLC Sucrose-13C | 99.5% | 343.29 g·mol⁻1 | C1113CH22O11 | 1mg
Sucrose-13C is 13C labeled Sucrose Sucrose (D-( )-Saccharose) is a disaccharide which is composed of two monosaccharides glucose and fructose Sucrose can be applied in some animal models including metabolic disease obesity diet on preference and diabetes et al[1]
Cayman Chemical Methomyl-d3, Purity: ≥99% deuterated forms (d1-d3), CAS: 1398109-07-3, 25 mg
An internal standard for the quantification of methomyl by GC- or LC-MS
![Revvity Health Sciences Inc Goat anti-rabbit IgG, [<sup>125</sup>I], 100µCi (3.7MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502811079.jpg-250.jpg)
Revvity Health Sciences Inc Goat anti-rabbit IgG, [125I], 100µCi (3.7MBq)
Goat anti-rabbit IgG, [125I], 100µCi (3.7MBq)
Medchemexpress LLC Cortodoxone-d7 (11-deoxycortisol-d7) | 152-58-9 | MFCD00003662 | 353.5 g/mol | C21H23D7O4 | 1 MG
Cortodoxone-d7 is the deuterium-labeled (d7) isotopologue of cortodoxone (11-deoxycortisol) supplied as a purified analytical standard for research use. It is intended for use as a stable isotope internal standard in quantitative mass spectrometry and isotope-dilution assays, enabling accurate analyte quantitation and compensation for matrix effects. Molecular formula C21H23D7O4; molecular weight 353.5 g/mol.
- Deuterium-labeled analog of 11-deoxycortisol for use as an internal standard.
- Suitable for LC-MS/MS and isotope-dilution quantitation workflows.
- Matches chromatographic behavior and ionization of the unlabeled analyte.
- Molecular formula C21H23D7O4; molecular weight 353.5 g/mol.
- Provided as a purified reference standard for analytical and research use.
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Revvity Health Sciences Inc Bombesin (6-14), D-Tyr6[125I], 10µCi
Bombesin (6-14), D-Tyr6[125I], 10µCi
Cayman Chemical Ursocholic Acid-d4, Purity: ≥99% deuterated forms (d1-d4), 10 mg
An internal standard for the quantification of ursocholic acid by GC- or LC-MS
Cambridge Isotope Laboratories Ethanol (1 1-D2 98%) ( 6% H2O) 1 g
Ethanol (1 1-D2 98%) ( 6% H2O) 1 g