Isotopically Labeled Compounds
Medchemexpress LLC L-Tyrosine-d4 | 62595-14-6 | 185.21 | 100 MG
L-Tyrosine-d4 is a deuterium labeled L-Tyrosine. L-Tyrosine is classified as a non-essential amino acid, and it can inhibit citrate synthase activity in the posterior cortex.
- Used as a tracer.
- Used as an internal standard for quantitative analysis by methods such as NMR, GC-MS, or LC-MS.
Medchemexpress LLC L-Lysine-13C6,15N2 dihydrochloride | 202406-54-0 | 99.6% | 227.05 | 5 MG
L-Lysine-13C6,15N2 (dihydrochloride) is a 15N-labeled and 13C-labled L-Lysine dihydrochloride. This compound can be used as a tracer and 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.
- 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 EfInaconazole-d4 500ug
An internal standard for the quantification of efinaconazole by GC- or LC-MS
Cayman Chemical Arachidic Acid-d2, Purity: ≥99% deuterated forms (d1-d2), CAS: 232600-70-3, 50 mg
An internal standard for the quantification of arachidic acid by GC- or LC-MS
Medchemexpress LLC 1-Naphthyl-d7 N-methylcarbamate | 362049-56-7 | 99% | 5 MG
Carbaryl-d7 is a deuterium-labeled version of Carbaryl, an acetylcholinesterase inhibitor. It functions by preventing the breakdown of acetylcholine in the synaptic cleft, leading to acetylcholine accumulation and neurotoxicity. This compound is primarily used as an insecticide.
- Can be used as a tracer.
- Functions as an internal standard for quantitative analysis using NMR, GC-MS, or LC-MS.
- Incorporates stable heavy isotopes for pharmacokinetic and metabolic studies.
Medchemexpress LLC Tropicamide-d3 | 2673270-13-6 | 99.10% | 1 MG
Tropicamide-d3 is a deuterium labeled Tropicamide and a selective M4 muscarinic acetylcholine receptor antagonist. It produces short acting mydriasis (dilation of the pupil) and cycloplegia when applied as eye drops. Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules as tracers for quantitation during drug development. Deuteration can affect 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 (+/-)-Lisofylline-d6 | 1185995-26-9 | ≥98.0% | 286.36 g/mol | C13H14D6N4O3 | 1MG
(±)-Lisofylline-d6 is the deuterium-labeled racemic form of lisofylline supplied as a neat stable-isotope reference material for research and analytical use. It is intended as an internal standard or tracer in pharmacokinetic, metabolic, and bioanalytical studies and is provided in small laboratory quantities.
- Isotopically labeled with six deuterium atoms.
- Racemic (±) mixture of lisofylline enantiomers.
- Cas number 1185995-26-9.
- Chemical formula C13H14D6N4O3.
- Molecular weight 286.36 g/mol.
- Purity ≥98.0% by HPLC; deuterium enrichment ≥99% atom D.
- Supplied as a neat solid in a 1 mg pack.
- Store at -20°C; shipped at room temperature.
- For research use only; not for human or clinical use.
Medchemexpress LLC 2-aminofluorene-d11 | 347841-44-5 | MFCD01074176 | 99.0% | 192.3 g/mol | C13D11N | 1 MG
2-Aminofluorene-d11 is the deuterium-labeled isotopologue of 2-aminofluorene (CAS 347841-44-5), provided as a stable-isotope reference standard for analytical and research applications. It is intended for use as an internal standard in mass spectrometry, method development, and isotopic tracer studies; reported purity (HPLC) is 99% with isotopic enrichment around 98%.
- Deuterium-labeled (d11) isotopologue for mass spectrometry.
- High purity suitable for analytical standards and reference use.
- High isotopic enrichment for reliable quantitation and tracing.
- Supplied in small, weighed quantities for laboratory use.
- Useful for method development, calibration, and isotope tracing studies.
![Revvity Health Sciences Inc Vasopressin, [<sup>125</sup>I]Tyr<sup>2</sup>, Arg<sup>8</sup>-, 10µCi (370kBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502810509.jpg-250.jpg)
Revvity Health Sciences Inc Vasopressin, [125I]Tyr2, Arg8-, 10µCi (370kBq)
Vasopressin, [125I]Tyr2, Arg8-, 10µCi (370kBq)
Cayman Chemical (4-Carboxybutyl-d4)triphenylphosphonium (bromide), Purity: ≥99% deuterated forms (d1-d4), CAS: 42932-63-8, 10 mg
An internal standard for the quantification of (4-carboxybutyl)triphenylphosphonium by GC- or LC-MS
Medchemexpress LLC Glycocyamine-d2 (guanidinoacetic acid-d2) | 1173020-63-7 | 99.9% | 119.12 | C3H5D2N3O2 | 1 MG
Glycocyamine-d2 is the deuterium-labeled analog of glycocyamine (guanidinoacetic acid), a metabolic precursor of creatine. It is provided as a stable-isotope standard for research and analytical applications, including quantitative mass spectrometry and metabolic studies.
- Stable-isotope labeled deuterated analog for tracer and internal standard use.
- High purity (99.9%) suitable for analytical workflows.
- Molecular formula C3H5D2N3O2 and molecular weight 119.12.
- Available in small to bulk quantities (1-500 mg) for method development and routine assays.
- Suitable for use in mass spectrometry and metabolic investigations.