Isotopically Labeled Compounds
Medchemexpress LLC Dodecyltrimethylammonium-d3 chloride | 1219337-20-8 | MFCD28899604 | 266.91 g·mol⁻¹ | C15H31D3ClN | 10 MG
DTAC-d3 (Dodecyltrimethylammonium-d3 chloride) is a deuterium-labeled analogue of DTAC supplied as a biochemical reagent for life-science research. It is commonly used as an isotope-labeled tracer or internal standard in analytical workflows, including mass spectrometry and lipidomics, and is supplied as a solid for laboratory use.
- Deuterium-labeled internal standard for analytical assays.
- Quaternary ammonium salt suitable for tracer and isotope studies.
- Molecular formula: C15H31D3ClN; molecular weight: 266.91 g·mol⁻¹.
- CAS number: 1219337-20-8.
- Certificate of analysis provides lot-specific purity information.
Medchemexpress LLC Z,Z-Dienestrol-d6 | 91297-99-3 | 99.8% | 272.37 | 1 MG
Z,Z-Dienestrol-d6 is the deuterium labeled Z,Z-Dienestrol. This compound can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. Deuteration has gained attention due to its potential to affect the pharmacokinetic and metabolic profiles of drugs.
![Revvity Health Sciences Inc Thyroxine, ([<sup>125</sup>I]-T4), L-[<sup>125</sup>I]-, 100µCi (3.7MBq), Specific Activity: 5700µCi (210MBq)/µg](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810637.jpg-250.jpg)
Revvity Health Sciences Inc Thyroxine, ([125I]-T4), L-[125I]-, 100µCi (3.7MBq), Specific Activity: 5700µCi (210MBq)/µg
Thyroxine, ([125I]-T4), L-[125I]-, 100µCi (3.7MBq), Specific Activity: 5700µCi (210MBq)/µg
Cayman Chemical MethIocarb-d3 1mg
An internal standard for the quantification of methiocarb by GC- or LC-MS
Medchemexpress LLC Isobutylparaben-d4 (isobutyl 4-hydroxybenzoate-d4) | 1219805-33-0 | 98.5% | 198.25 g/mol | C11H10D4O3 | 5 MG
Isobutylparaben-d4 is the deuterium-labeled analogue of isobutylparaben used as an analytical standard for quantitative assays, including LC-MS, where isotope dilution improves accuracy and precision. Supplied as a purified powder for research use, it facilitates trace-level detection and method validation.
- Deuterium-labeled internal standard for LC-MS quantitation.
- High purity for accurate analytical results.
- Molecular weight 198.25 g/mol and formula C11H10D4O3.
- Powder form with recommended storage at -20°C; solvent stability at -80°C (6 months) and -20°C (1 month).
- Ideal small-quantity packaging for method development and validation.
Cayman Chemical PenIcIlamIn-d3 1mg
An internal standard for the quantification of penicillamine by GC- or LC-MS
Medchemexpress LLC N-valerylglycine-d2 | 3008541-76-9 | 95.0% | 161.20 g/mol | C7H11D2NO3 | 10 MG
Deuterated N-valerylglycine-d2 is a stable isotope-labeled amino acid derivative intended for use as an internal standard or tracer in analytical laboratories. It is provided as a small, high-purity material for quantitative analysis and method validation in spectroscopy and mass spectrometry workflows.
- Deuterium-labeled tracer for quantitative NMR, GC-MS, and LC-MS.
- High purity: 95.0%.
- Molecular formula C7H11D2NO3 and molecular weight 161.20 g/mol.
- Supplied as 10 MG small-scale analytical quantity.
- Stable when stored under recommended conditions, supporting reproducible results.
- Suitable as an internal standard for method validation and accurate quantitation.
Medchemexpress LLC Methoxyamine-d3 hydrochloride | 110220-55-8 | 99.5% | 86.54 | CH3D3ClNO | 25mg
Methoxyamine-d3 (O-Methylhydroxylamine-d3) hydrochloride is the deuterium labeled Methoxyamine hydrochloride Methoxyamine hydrochloride is an orally active and potent base excision repair (BER) inhibitor[1]
Cayman Chemical Fluconazole-d4 500ug
An internal standard for the quantification of fluconazole by GC- or LC-MS
Cambridge Isotope Laboratories DL-CYSTEINE (3,3-D2, 98%), 0.5 G, 124051-54-3
DL-CYSTEINE (3,3-D2, 98%), 0.5 G, 124051-54-3
![Revvity Health Sciences Inc Triiiodothyronine, L-3, 5, 3'-[<sup>125</sup>I], 100 µCi (3.7 MBq), Specific Activity: 3300 µCi (122 MBq)/µg](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812217.jpg-250.jpg)
Revvity Health Sciences Inc Triiiodothyronine, L-3, 5, 3'-[125I], 100 µCi (3.7 MBq), Specific Activity: 3300 µCi (122 MBq)/µg
Triiiodothyronine, L-3, 5, 3'-[125I], 100 µCi (3.7 MBq), Specific Activity: 3300 µCi (122 MBq)/µg
![Revvity Health Sciences Inc Acetic Acid, Sodium Salt, [1-<sup>14</sup>C]-, Specific Activity: 45-60mCi (1.66-2.22GBq)/mmol, 1mCi (37MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812339.jpg-250.jpg)
Revvity Health Sciences Inc Acetic Acid, Sodium Salt, [1-14C]-, Specific Activity: 45-60mCi (1.66-2.22GBq)/mmol, 1mCi (37MBq)
Acetic Acid, Sodium Salt, [1-14C]-, Specific Activity: 45-60mCi (1.66-2.22GBq)/mmol, 1mCi (37MBq)
Medchemexpress LLC Atropine-d5 | 5908-99-6 | ≥99.0% | 1 MG
Atropine-d5 is a deuterium-labeled version of Atropine, which is a broad-spectrum, competitive antagonist of the muscarinic acetylcholine receptor (mAChR). This compound is valuable as a tracer and an internal standard for quantitative analysis, leveraging the influence of deuteration on pharmacokinetic and metabolic profiles in drug development.
- Deuterium-labeled version of atropine.
- Acts as a broad-spectrum, competitive antagonist of the muscarinic acetylcholine receptor.
- Can be used as a tracer for quantitative analysis.
- Serves as an internal standard for techniques like NMR, GC-MS, or LC-MS.
- Useful in drug development for pharmacokinetic and metabolic profiling.
Medchemexpress LLC D-Glucose-13C-4 | 40762-22-9 | MFCD00037545 | >98.0% | 5 MG
D-Glucose-13C-4 is the 13C labeled D-Glucose. D-Glucose (Glucose) is a monosaccharide, an important carbohydrate in biology, a carbohydrate sweetener, and a critical component of general metabolism. It also serves as a critical signaling molecule related to both cellular metabolic status and biotic and abiotic stress response.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Medchemexpress LLC L-Carnitine-d9 | 126827-79-0 | ≥99.0% | 1 MG
L-Carnitine-d9 is a deuterium-labeled L-Carnitine, an endogenous molecule involved in fatty acid metabolism. Biosynthesized in the human body using L-lysine and L-methionine, it transports long-chain fatty acyl-CoAs into mitochondria for degradation through β-oxidation. It can also improve metabolic imbalances in various inborn errors of metabolism.
- Deuterium-labeled L-Carnitine for tracing during drug development.
- Participates in fatty acid metabolism.
- Transports long-chain fatty acyl-CoAs into mitochondria.
- May improve metabolic imbalances in inborn errors of metabolism.