Isotopically Labeled Compounds
Cambridge Isotope Laboratories ALPHA-KETOISOVALERIC ACID, SODIUM SALT (13C5, 98%), 1 G, 1173018-24-0
ALPHA-KETOISOVALERIC ACID, SODIUM SALT (13C5, 98%), 1 G, 1173018-24-0
![Revvity Health Sciences Inc α-Bungarotoxin, [<sup>125</sup>I]-Tyr<sup>54</sup>-, High Specific Activity, 50 µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810488.jpg-250.jpg)
Revvity Health Sciences Inc α-Bungarotoxin, [125I]-Tyr54-, High Specific Activity, 50 µCi
α-Bungarotoxin, [125I]-Tyr54-, High Specific Activity, 50 µCi
Medchemexpress LLC Prostaglandin D2-d9 | 2254642-52-7 | 99.0% | 361.52 g/mol | C20H23D9O5 | 100 UG
Prostaglandin D2-d9 is a deuterium-labeled analogue of prostaglandin D2 used as a stable isotope internal standard and tracer for quantitative mass spectrometry and NMR assays. Supplied as a solution (100 μg) for research use, the isotopic label improves accuracy and precision in PGD2 quantification.
- Deuterium-labeled internal standard for LC-MS, GC-MS, and NMR.
- High purity (99.0%) for reliable quantitation.
- Supplied as 100 μg solution in methyl acetate for convenient use.
- Stable under recommended storage: solution -20°C (up to 2 years); stock solutions -80°C (6 months).
- Suitable as a tracer and calibration standard to improve assay accuracy and precision.
Medchemexpress LLC L-homocysteine-d4 | 331665-12-4 | MFCD01317494 | 94.9% | 139.21 | C4H5D4NO2S | 1 MG
L-Homocysteine-d4 is the deuterium-labeled form of L-homocysteine provided as a neat solid for use as an internal standard and tracer in quantitative analytical methods. It is intended for research and analytical applications such as LC-MS, GC-MS, and NMR, enabling isotope-dilution quantitation and method calibration.
- Deuterium-labeled L-homocysteine for isotope-dilution quantitation.
- High purity suitable for analytical standards and reference materials.
- Supplied as a white to off-white solid stable under sealed storage at 4°C.
- Soluble in water and DMSO with ultrasonic assistance for sample preparation.
- Known chemical formula and molecular weight facilitate accurate mass confirmation during analysis.
Medchemexpress LLC Stearic acid-d4 | 130048-57-6 | MFCD06658552 | ≥99.0% | 10 MG
Stearic acid-d4 is the deuterium-labeled analogue of stearic acid, supplied as an isotope-labeled reference standard for analytical and metabolic studies. It is intended for research use and is provided as a powder with defined storage recommendations.
Medchemexpress LLC L-histidine-d5 hydrochloride hydrate | 2483831-75-8 | 99.6% | 214.66 g·mol⁻¹ | C6H7D5ClN3O3 | 10 MG
L-histidine-d5 hydrochloride hydrate is the deuterium-labeled form of the amino acid L-histidine supplied as the hydrochloride hydrate salt. It is intended as a high-purity analytical standard for use as a tracer or internal standard in quantitative NMR, GC-MS, and LC-MS workflows.
- Deuterium-labeled (d5) for isotopic tracing.
- High purity suitable for analytical applications.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS.
- Available in small pack sizes for method development.
- Useful as a tracer in metabolic and quantitative studies.
Medchemexpress LLC ε-caprolactone-d6 | 1219802-08-0 | 99.3% | 120.18 g·mol^-1 | C6H4D6O2 | 5 MG
Deuterium-labeled ε-caprolactone is a stable isotope reagent used as a tracer and internal standard for quantitative NMR, GC-MS, and LC-MS. It is supplied in small laboratory-scale quantities and is characterized by the deuterated formula C6H4D6O2 and a molecular weight of 120.18 g·mol⁻1.
- High chemical purity: 99.3%.
- Suitable as tracer and internal standard for quantitative analysis.
- Deuterated molecular formula: C6H4D6O2.
- Appearance: colorless to light yellow liquid.
- Long-term storage: -20°C for pure material; in solvent store at -80°C (6 months) or -20°C (1 month).
- Available in small milligram pack sizes for research use.
Medchemexpress LLC Riociguat-13C,d6 | 625115-55-1 | 99.0% | 429.45 | 1 MG
Riociguat-13C,d6 is a 13C and deuterium labeled version of Riociguat, an oral stimulator of soluble guanylate cyclase (sGC) used to treat pulmonary hypertension. Deuteration, the incorporation of stable heavy isotopes into drug molecules, is used as tracers for quantitation during drug development and can impact pharmacokinetic and metabolic profiles of drugs.
- 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 Rosuvastatin-d6 (sodium) | 2070009-41-3 | 98.6% | 509.56 | 500 UG
Rosuvastatin-d6 sodium is deuterium labeled Rosuvastatin sodium. It is a competitive HMG-CoA reductase (HMGCR) inhibitor, with an IC50 of 11 nM. This compound potently blocks hERG current with an IC50 of 195 nM, reduces the expression of mature hERG, and the interaction of heat shock protein 70 (Hsp70) with the hERG protein. Rosuvastatin sodium effectively lowers low-density lipoprotein (LDL) cholesterol, triglycerides, and C-reactive protein levels.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Cayman Chemical N-ArachIdonyl TaurIn-d4 100ug
An internal standard for the quantification of N-arachidonoyl taurine by GC- or LC-MS
Cayman Chemical AcItretIn-d3 1mg
An internal standard for the quantification of acitretin by GC- or LC-MS
Cerilliant Corporation (+-)-AMPHETAMINE-D5 1ML (SC)(
(�)-Amphetamine-D5, 100 ug/mL (SC); 1 mL/ampoule
Cayman Chemical FlIbnserIn-d4hydrochlorIde 1mg
An internal standard for the quantification of flibanserin by GC- or LC-MS
Medchemexpress LLC Trehalose 6,6'-dimycolate (cord factor) | 61512-20-7 | MFCD18643296 | 97.0% | 2053.4 g/mol | C130H250O15 | 1 MG
Trehalose 6,6′-dimycolate is a mycobacterial cell-wall glycolipid used as a research reagent to model Mycobacterium tuberculosis-induced inflammation and granuloma formation. It modulates innate and adaptive immune responses and is applied in both in vitro and in vivo immunology studies.
- Mimics mycobacterial cord factor activity.
- Induces granuloma formation and inflammatory signaling.
- Modulates macrophage killing and antigen presentation.
- Suitable for in vitro and in vivo immunology research.
- Provided as small-quantity, high-purity material (97.0%).
Medchemexpress LLC Benzoic acid, 2-(acetyl-2,2,2-d3-oxy)- | 921943-73-9 | 99.8% | 183.18 | 25 MG
Aspirin-d3 is the deuterium labeled Aspirin. Aspirin (Acetylsalicylic acid) is an orally active, potent and irreversible inhibitor of cyclooxygenase COX-1 and COX-2, with IC50 values of 5 and 210 μg/mL, respectively. It induces apoptosis, inhibits the activation of NF-κB, and also inhibits platelet prostaglandin synthetase, which can prevent coronary artery and cerebrovascular thrombosis.
- Deuterium-labeled compound with stable heavy isotopes
- Can affect pharmacokinetic and metabolic profiles of drugs
- Used as a tracer and internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
- Orally active, potent, and irreversible inhibitor of cyclooxygenase COX-1 and COX-2
- Induces apoptosis, inhibits NF-κB activation, and platelet prostaglandin synthetase