Isotopically Labeled Compounds
Medchemexpress LLC 7-keto-Deoxycholic acid | 911-40-0 | 99.7% | 406.56 | 1 ML
7-keto-Deoxycholic acid is a metabolite of bile acids, naturally found in *Clostridium absonum* and convertible by *Lactobacillus* and *Bifidobacterium*. It plays a role in the metabolism of cholic acid and its bioconversion rate increases with the presence of deoxycholic acid. This compound is for research use only.
- Metabolite of bile acids
- Convertible by *Lactobacillus* and *Bifidobacterium*
- Exhibits increased bioconversion rate with deoxycholic acid
- Suitable for research applications
- Solid storage at 4°C, protected from light
- Solution storage at -80°C for 6 months, or -20°C for 1 month, protected from light
Cambridge Isotope Laboratories L-ALLO-ISOLEUCINE (D10, 98%), 0.1 G
L-ALLO-ISOLEUCINE (D10, 98%), 0.1 G
Medchemexpress LLC Fmoc-Met-OH-d3 | 502692-58-2 | 374.47 | 5 MG
Fmoc-Met-OH-d3 is the deuterium labeled Fmoc-Met-OH. It serves as a tracer and can be used as an internal standard for quantitative analysis.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR
- Can be used as an internal standard for quantitative analysis by GC-MS
- Can be used as an internal standard for quantitative analysis by LC-MS
Medchemexpress LLC Undecanoic acid-d21 | 60658-40-4 | 207.42 | 100 MG
Undecanoic acid-d21 is a deuterium-labeled version of undecanoic acid, a monocarboxylic acid with antifungal properties. It functions by inhibiting the production of exocellular keratinase, lipase, and the biosynthesis of several phospholipids in *T. rubrum*. Deuteration can affect the pharmacokinetic and metabolic profiles of drugs, making this compound useful for research applications.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Inhibits production of exocellular keratinase, lipase, and biosynthesis of phospholipids in *T. rubrum*
- Suitable for drug development studies due to potential impact on pharmacokinetic and metabolic profiles
Cambridge Isotope Laboratories 2-METHYLIMIDAZOLE (D6, 98%), 0.5 G, 1173022-19-9
2-METHYLIMIDAZOLE (D6, 98%), 0.5 G, 1173022-19-9
![Revvity Health Sciences Inc LH-RH, [<sup>125</sup>I]-[D-Trp<sup>6</sup>]-, 50µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810487.jpg-250.jpg)
Medchemexpress LLC Methyl-d3 p-toluenesulfonate | 7575-93-1 | MFCD00069406 | >98.0% | 189.25 g/mol | C8H7D3O3S | 25mg
Methy-d3 (toluenesulfonate) is the deuterium labeled Methy toluenesulfonate[1]
Medchemexpress LLC Nonan-1-ol-d19 | 349553-86-2 | 98.0% | 163.37 | 5 MG
Nonan-1-ol-d19 is a deuterium-labeled version of Nonan-1-ol. It is intended for research use only and is not sold to patients. The compound appears as a colorless to light yellow liquid. It should be stored at -20°C for up to 3 years in pure form, and in solvent at -80°C for 6 months or -20°C for 1 month.
- Can be used as a tracer.
- Suitable as an internal standard for quantitative analysis using techniques such as NMR, GC-MS, or LC-MS.
- Deuterium substitution has the potential to influence the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Leucovorin-d4 (calcium hydrate) | >90.0% | 533.54 | C20H19D4CaN7O8 | 250 UG
Leucovorin-d4 (calcium hydrate) is a deuterium-labeled folinic acid supplied as the calcium hydrate salt for research and analytical applications. It is provided as a small research-grade standard (250 μg) with a listed purity of >90% and is not intended for human use.
- Deuterium-labeled folinic acid for use as an isotope standard.
- Calcium hydrate form suitable for analytical workflows.
- Purity >90.0% as specified by the supplier.
- Molecular formula C20H19D4CaN7O8 and molecular weight 533.54.
- Supplied in a 250 μg research pack for analytical or mass spectrometry applications.
- Not intended for human or clinical use; for research use only.
Medchemexpress LLC Stearic acid-d5 | 211443-83-3 | ≥99% | 100 MG
Stearic acid-d5 is a deuterium labeled stearic acid, a long-chain dietary saturated fatty acid found in various animal and vegetable fats and oils. It is commonly used as an internal standard for the quantification of stearic acid by GC- or LC-MS. Deuterium labeling incorporates stable heavy isotopes into molecules, which can serve as tracers for quantitation during drug development and may impact pharmacokinetic and metabolic profiles of drugs.
- Used as an internal standard for quantification.
- Deuterium labeled.
- Functions as a tracer for quantitation during drug development.
- May affect pharmacokinetic and metabolic profiles.
- Long-chain saturated fatty acid.
Revvity Health Sciences Inc Chromium-51 Radionuclide, 5mCi, EDTA Complex in 0.005M EDTA (pH 7.0)
Chromium-51 Radionuclide, 5mCi, EDTA Complex in 0.005M EDTA (pH 7.0)
Medchemexpress LLC Salcaprozate-d4 sodium (SNAC-d4 sodium) | 203787-91-1 | 99.7% | 305.34 | 500 UG
Salcaprozate-d4 (sodium) is a deuterated labeled Salcaprozate (sodium). Salcaprozate sodium (SNAC) is an oral absorption promoter with potential as a delivery agent for oral forms of heparin and insulin. It can increase passive transcellular permeation across small intestinal epithelia due to increased lipophilicity from non-covalent macromolecule complexation.
- 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 Sulfamethoxazole-d4, Purity: ≥99% deuterated forms (d1-d4); ≤1% d0, CAS: 1020719-86-1, 25 mg
An internal standard for the quantification of sulfamethoxazole by GC- or LC-MS
Medchemexpress LLC L-serine (13C3,15N,d3) | 1994299-33-0 | 99.6% | 112.08 g/mol | ¹³C₃H₄D₃¹⁵NO₃ | 10 MG
Isotopically labeled L-serine for use as a tracer or internal standard in mass spectrometry and metabolic studies. Supplied for research use, the compound contains 13C, 15N, and deuterium labels and is characterized by high chemical purity.
- Isotopically labeled amino acid (13C3, 15N, d3)
- Intended for tracer studies and internal standard use in MS
- Purity 99.6% (GC)
- Molecular weight 112.08 g/mol
- CAS number 1994299-33-0
- Provided as a small research quantity suitable for analytical use