Isotopically Labeled Compounds
Cambridge Isotope Laboratories Diethylene glycol (unlabeled) 1 mg/mL in methanol 1 2 mL
Diethylene glycol (unlabeled) 1 mg/mL in methanol 1 2 mL
Cambridge Isotope Laboratories GLYCINE (13C2, 97-99%; 2,2-D2, 97-99%; 15N, 97-99%), 0.25 G
GLYCINE (13C2, 97-99%; 2,2-D2, 97-99%; 15N, 97-99%), 0.25 G
Cambridge Isotope Laboratories ANILINE (13C6, 99%), 0.25 G, 100849-37-4
ANILINE (13C6, 99%), 0.25 G, 100849-37-4
Cambridge Isotope Laboratories ACETIC ACID-D4 (D, 99.5%), 50 G, 1186-52-3
ACETIC ACID-D4 (D, 99.5%), 50 G, 1186-52-3
Medchemexpress LLC 7-keto-Deoxycholic acid | 911-40-0 | 99.71% | 406.56 | 25 MG
7-keto-Deoxycholic acid is a metabolite of bile acids found in *Clostridium absonum*. It can also be converted from *Lactobacillus* and *Bifidobacterium* under specific conditions. It exhibits an increased bioconversion rate when an equimolar concentration of deoxycholic acid is added.
- Induced by deoxycholic acid and subsequently metabolized
- *E. lentum-like c-25* converts cholic acid to deoxycholic acid and 7-keto-Deoxycholic acid under anaerobic incubation
Medchemexpress LLC 1-hexadecanol-d4 | 1398065-49-0 | 246.47 | C16H30D4O | 10 MG
1-Hexadecanol-d4 is the deuterium-labeled isotopologue of 1-hexadecanol, provided as a stable-isotope analytical standard for mass spectrometry, isotopic tracing, and related biochemical research.
- Deuterium labeling: d4.
- CAS: 1398065-49-0.
- Molecular formula: C16H30D4O.
- Molecular weight: 246.47.
- Typical package sizes: 5 mg, 10 mg, 50 mg, 100 mg.
- Applications: internal standard for MS quantification and metabolic tracing.
![Revvity Health Sciences Inc Cysteine L-[<sup>35</sup>S]-, 1mCi (37MBq), 10mM DTT](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810665.jpg-250.jpg)
Revvity Health Sciences Inc Cysteine L-[35S]-, 1mCi (37MBq), 10mM DTT
Cysteine L-[35S]-, 1mCi (37MBq), 10mM DTT
Medchemexpress LLC Hexanedioic acid dimethyl ester-d4 | 55724-08-8 | 99.4% | 178.22 g/mol | C8H10D4O4 | 5 MG
Dimethyl adipate-d4 is the deuterium-labeled (d4) isotopic form of dimethyl adipate (hexanedioic acid dimethyl ester). It is supplied as a high-purity analytical standard for research and analytical workflows, commonly used as an internal standard in mass spectrometry and as a synthetic intermediate in organic synthesis.
- Deuterium-labeled (d4) isotopic standard suitable for mass spectrometry.
- High purity (99.4%) for reliable quantitation.
- Molecular weight 178.22 g/mol for accurate mass calibration.
- Available in small-scale quantities including 5 mg for trace analysis.
- Suitable as an internal standard and analytical reference in method development.
Medchemexpress LLC Phenacetin-d5 (Acetophenetidin-d5) | 69323-74-6 | 99.5% | 1 MG
Phenacetin-d5 is a deuterium-labeled form of Phenacetin, a non-opioid analgesic and antipyretic. It acts as a selective COX-3 inhibitor and is utilized as a probe for cytochrome P450 enzymes. This compound is a white to off-white solid with a molecular weight of 184.25 and a chemical formula of C10H8D5NO2.
- Used as a probe of cytochrome P450 enzymes CYP1A2 in human liver microsomes and in rats.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Deuteration has gained attention for its potential to affect the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Roxithromycin-d7 | 80214-83-1 | 98.3% | 1 MG
Roxithromycin-d7 (RU-28965-d7) is the deuterium-labeled version of Roxithromycin (HY-B0435), a semi-synthetic macrolide antibiotic. It is intended for research use only and is not sold to patients. Deuterium substitution, as seen in Roxithromycin-d7, has the potential to influence the 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 L-Serine-N,N,O,1,2,3,3-d7 | 935275-35-7 | 112.14 | 50 MG
L-Serine-d7 is the deuterium-labeled form of L-Serine, a non-essential amino acid crucial for cellular proliferation. This compound is ideal for use in various research applications, particularly as a tracer or internal standard.
- Can be utilized as a tracer in research applications.
- Serves as an internal standard for quantitative analysis using techniques like NMR, GC-MS, or LC-MS.
- Deuterium substitution may influence the pharmacokinetic and metabolic profiles of drugs.
- Boasts a purity of 99.97%.
- Presented as a white to off-white solid.
- Soluble in H2O at 50 mg/mL (445.87 mM), requiring ultrasonic treatment for dissolution.
Revvity Health Sciences Inc Phosphorus-32 Radionuclide, 10mCi (370MBq), Specific Activity: 8500-9120Ci (314-337TBq)/mmol, Orthophosphoric Acid in 1mL Water
Phosphorus-32 Radionuclide, 10mCi (370MBq), Specific Activity: 8500-9120Ci (314-337TBq)/mmol, Orthophosphoric Acid in 1mL Water
Cayman Chemical Bromocriptine-13C-d3, Purity: ≥99% deuterated forms (d1-d3), 1 mg
An internal standard for the quantification of bromocriptine by GC- or LC-MS
Medchemexpress LLC Pentoxifylline-d6 | 1185878-98-1 | 99.0% | 1 MG
Pentoxifylline-d6 is the deuterium-labeled Pentoxifylline. Pentoxifylline is a haemorheological agent and an orally active non-selective phosphodiesterase (PDE) inhibitor. It exhibits immune modulation, anti-inflammatory, hemorheological, anti-fibrinolytic, and anti-proliferation effects. Pentoxifylline is applicable for research in peripheral vascular disease, cerebrovascular disease, and other conditions involving defective regional microcirculation.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Stable heavy isotopes incorporated into drug molecules serve as tracers for quantitation during drug development.
- Deuteration can impact the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC 1-bromoheptane-d5 | 1219805-66-9 | 95.0% | 184.13 g·mol⁻¹ | C7H10D5Br | 25 MG
1-Bromoheptane-d5 (CAS 1219805-66-9) is the deuterium-labeled analogue of 1-bromoheptane supplied as a research reagent and reference standard. It is used in analytical chemistry, mass spectrometry, tracer studies, and synthetic chemistry where isotopic labeling enables accurate quantification and tracking.
- Deuterium-labeled (d5) to enable mass-differentiation in MS analyses.
- Suitable as an internal standard for quantitative assays.
- Liquid, ready for use in synthetic and analytical workflows.
- Molecular formula C7H10D5Br and molecular weight 184.13 g·mol⁻¹.
- Available in small pack sizes appropriate for research use.