Isotopically Labeled Compounds
Medchemexpress LLC 7-keto-Deoxycholic acid | 911-40-0 | 99.7% | 406.56 | 50 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 shows an increasing bioconversion rate with the addition of an equimolar concentration of deoxycholic acid and is induced by deoxycholic acid and then metabolized. *E. lentum*-like c-25 converts 81.7% of 2 mM cholic acid to deoxycholic acid and 3.7% to 7-keto-Deoxycholic acid under anaerobic incubation. *E. lentum*-like c-25 also converts 91.5% of 150 mg/mL cholic acid to deoxycholic acid and 1.1% to 7-keto-Deoxycholic acid under anaerobic incubation.
- Metabolite of bile acids
- Found in Clostridium absonum
- Converted from Lactobacillus and Bifidobacterium
- Solid appearance
- White to off-white color
- Classified as ketones, aldehydes, and acids
- Endogenous metabolite
- Soluble in DMSO at 100 mg/mL
Cambridge Isotope Laboratories ETHYL BROMOACETATE (1,2-13C2, 99%), 1 G, 61898-49-5
ETHYL BROMOACETATE (1,2-13C2, 99%), 1 G, 61898-49-5
Cambridge Isotope Laboratories L-Carnitine(mono) clo4 O-glutaryl (unlabeled) 0 1 mg
L-Carnitine(mono) clo4 O-glutaryl (unlabeled) 0 1 mg
Medchemexpress LLC L-cysteine-13C3,15N | 202406-97-1 | MFCD01073449 | 99.9% | 125.13 | 13C3H7 15NO2S | 50mg
L-Cysteine-13C3 15N is the 13C- and 15N-labeled L-Cysteine L-Cysteine is a conditionally essential amino acid which acts as a precursor for biologically active molecules such as hydrogen sulphide (H2S) glutathione and taurine L-Cysteine suppresses ghrelin and reduces appetite in rodents and humans[1]
Medchemexpress LLC Pentacosane-d52 | 121578-13-0 | 10 MG
Pentacosane-d52 is a deuterium-labeled version of Pentacosane, a compound found in Curcuma raktakanda and Malus domestica known for its anti-cancer activities. This high-purity compound is primarily utilized in research as a tracer and an internal standard for various quantitative analytical methods.
- Molecular weight: 405.00
- Formula: C25D52
- Appearance: White to off-white solid
- Purity: 98.59%
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuterium labeling can affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC 1-methyladenosine-d3 hydrochloride | 00-00-0 | 98.1% | 320.75 | C11H13D3ClN5O4 | 5 MG
1-Methyladenosine-d3 hydrochloride is a deuterium-labeled hydrochloride salt used as an isotope-labeled internal standard and research reagent for studying RNA methylation and quantifying methylated nucleosides in biological samples. It provides a stable tracer for mass spectrometry and analytical workflows in epitranscriptomics and biomarker research.
- Deuterium-labeled internal standard for MS and quantitative assays.
- Hydrochloride salt form for improved solubility and stability.
- High purity (98.1%) appropriate for analytical use.
- Molecular weight 320.75; formula C11H13D3ClN5O4.
- Available as 5 mg vials for laboratory use.
- Store at -20°C, sealed, away from moisture and light.
Medchemexpress LLC Monohydroxy-3-butenyl mercapturic acid-d6 | >98.0% | 478.64 g/mol | C18H18D12N2O8S2 | 1mg
MHBMA-d6 is the deuterium labeled MHBMA[1]
Cayman Chemical Salvinorin A-d3, Purity: ≥99% deuterated forms (d1-d3), CAS: 791114-98-2, 1 mg
An internal standard for the quantification of salvinorin A by GC- or LC-MS; intended for research and forensic applications
Cambridge Isotope Laboratories SODIUM BUTYRATE (1-13C, 99%), 5 G, 62601-04-1
SODIUM BUTYRATE (1-13C, 99%), 5 G, 62601-04-1
Medchemexpress LLC Oxaprozin-d4 | 21256-18-8 | 99.1% | 5 MG
Oxaprozin-d4 is the deuterium-labeled Oxaprozin, a non-steroidal anti-inflammatory agent (NSAID). It is for research use only.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Sigma Aldrich Fine Chemicals Biosciences Lauric acid-1-13C 99 atom % 13C | 93639-08-8 | MFCD00002737 | 250MG
Lauric acid-1-13C 99 atom % 13C | Mol Wt: 201.31 | 93639-08-8 | MFCD00002737 | 250MG
Medchemexpress LLC 4h-1-Benzopyran-4-one, 3-(4-hydroxyphenyl)-7-methoxy-d3 | 10 MG
Isoformononetin-d3 is the deuterium labeled Isoformononetin. It is an analog of Daidzein and has immunoprotective effects. Isoformononetin inhibits the differentiation of Th17 and B-cells lymphopoiesis to promote osteogenesis in estrogen-deficient bone loss conditions. Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules as tracers for quantitation during drug development. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- Deuterium labeled compound
- Analog of daidzein
- Immunoprotective effects
- Inhibits differentiation of Th17 and B-cells lymphopoiesis
- Promotes osteogenesis in estrogen-deficient bone loss conditions
- Used as a tracer for quantitation during drug development
- Potential to affect pharmacokinetic and metabolic profiles of drugs
Cayman Chemical 2′-Deoxyuridine-d2, Purity: ≥99% deuterated forms (d1-d2), CAS: 40632-23-3, 1 mg
An internal standard for the quantification of 2’-deoxyuridine by GC- or LC-MS
Medchemexpress LLC Teriflunomide-d4 | 1185240-22-5 | 99.98% | 274.23 | 50 MG
Teriflunomide-d4 is deuterium labeled Teriflunomide. It is intended for research use only and is not sold to patients.
- 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 of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Clozapine-d8 | 1185053-50-2 | 99.7% | C18H11D8ClN4 | 10MG
Clozapine-d8 is the deuterium-labeled isotopologue of clozapine supplied as an analytical reference standard for pharmaceutical research. It is intended for use as an internal standard in quantitative LC-MS assays, method development, and pharmacokinetic studies where isotopic labeling improves accuracy, precision, and traceability of measurements.
- High isotopic labeling to support accurate internal standardization.
- Intended for LC-MS method development and quantitative assays.
- Useful for pharmacokinetic and ADME studies requiring isotopic tracers.
- Provided in small-mass formats suitable for analytical workflows.
- Typically supplied with analytical documentation such as COA, HNMR, and LCMS.