Isotopically Labeled Compounds
![Medchemexpress LLC Benzo[e]pyrene-d12 | 205440-82-0 | MFCD00143670 | 98.0% | 264.38 g/mol | C20D12 | 5 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000262268.png-250.jpg)
Medchemexpress LLC Benzo[e]pyrene-d12 | 205440-82-0 | MFCD00143670 | 98.0% | 264.38 g/mol | C20D12 | 5 MG
Benzo[e]pyrene-d12 is the deuterium-labeled isotopologue of benzo[e]pyrene used as an internal standard and tracer in analytical chemistry. It provides a mass-shifted reference for accurate quantitation and method development by mass spectrometry.
- Isotopically labeled (D12) for clear mass separation.
- Molecular formula C20D12; molecular weight 264.38 g/mol.
- CAS number 205440-82-0.
- 98.0% chemical purity and 98 atom % deuterium enrichment.
- Supplied in small milligram quantities for analytical use.
- Suitable as an internal standard for quantitative mass spectrometry workflows.
Medchemexpress LLC Methionine | 00-00-0 | MFCD11983488 | 98.0% | C5H7D4NO2S | 10MG
Methionine-d4 is the deuterium-labeled form of methionine used as an isotopic tracer and internal standard for quantitative analysis by NMR, GC-MS, and LC-MS. The labeled compound provides accurate mass discrimination and consistent performance in analytical assays, and is supplied as a high-purity solid suitable for storage and routine laboratory use.
- Deuterium-labeled internal standard for quantitative methods
- Compatible with NMR, GC-MS, and LC-MS analyses
- High chemical purity for reliable quantitation
- Stable solid form for long-term storage
- Suitable as a tracer in metabolic and pharmacokinetic studies
Medchemexpress LLC Lactate-d3 sodium | 1219802-24-0 | MFCD29050090 | 98.0% | 115.08 g/mol | C3H2D3NaO3 | 10 MG
Lactate-d3 sodium is the deuterium-labeled sodium salt of DL-lactic acid supplied as a 60% w/w aqueous solution for use as an isotopically labeled reagent in analytical and metabolic studies.
- Supplied as a 60% w/w aqueous solution suitable for stock and dilution.
- Deuterium-labeled (d3) sodium salt for isotopic tracing and mass spectrometry applications.
- High purity: 98.0%.
- Molecular weight approximately 115.08 g/mol and formula C3H2D3NaO3.
- Provided in a small 10 mg quantity for analytical use and method development.
Cayman Chemical Methomyl-d3 1mg
An internal standard for the quantification of methomyl by GC- or LC-MS
Medchemexpress LLC (Rac)-atropine-d3 | 1276197-36-4 | 99.1% | 292.39 g/mol | C17H20D3NO3 | 10 MG
(Rac)-Atropine-d3 is the deuterium-labeled form of racemic atropine intended for use as a tracer or internal standard in analytical methods such as NMR, GC-MS, and LC-MS. It is supplied as a white to off-white solid and is offered in milligram-scale research pack sizes.
- Deuterium-labeled racemic atropine for analytical use.
- Suitable as tracer or internal standard for NMR, GC-MS, and LC-MS.
- High reported purity (≈99.1%).
- White to off-white solid, convenient for handling and storage.
- Recommended storage: powder at -20°C for long-term stability.
- Available in milligram-scale quantities for method development and quantitation.
Cambridge Isotope Laboratories METHANE (12C, 99.95%; D4, 98%), 1 L, 558-20-3
METHANE (12C, 99.95%; D4, 98%), 1 L, 558-20-3
Cambridge Isotope Laboratories Triallate (diisopropyl-13C6 99%) 100 ug/mL in nonane 1 2 mL
Triallate (diisopropyl-13C6 99%) 100 ug/mL in nonane 1 2 mL
Medchemexpress LLC DEHP-d4 (bis(2-ethylhexyl) phthalate-d4) | 93951-87-2 | 99.9% | 25 MG
DEHP-d4 is the deuterium labeled DEHP, an endogenous metabolite. This compound is intended for research use only and can be utilized as a tracer or an internal standard for quantitative analysis. It is suitable for analytical techniques such as NMR, GC-MS, or LC-MS.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Stable heavy isotopes incorporated into drug molecules for quantitation
- Potential to affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Choline-d4 chloride | 285979-70-6 | 99.9% | 1 MG
Choline-d4 chloride is the deuterium labeled Choline chloride. It is an organic compound and a quaternary ammonium salt, an acyl group acceptor and choline acetyltransferase substrate, also an important additive in feed, especially for chickens where it accelerates growth. This product is for research use only.
- Deuterium labeled Choline chloride
- Tracer
- Internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Cambridge Isotope Laboratories DEUTERIUM (D, 99.8%) (D2,99.6%+HD,0.4%) | 7782-39-0 | 50L
DEUTERIUM (D, 99.8%) (D2,99.6%+HD,0.4%) | 7782-39-0 | 50L. **This item is shipped in a Code C stainless steel lecture bottle. The fee for the bottle will need added to the order as a separate charge. Please include part# NC9763154 to the order.
Medchemexpress LLC Isoproturon-d3 | 352438-80-3 | 99.8% | 1 MG
Isoproturon-d3 is the deuterium labeled Isoproturon. Isoproturon belongs to the phenylurea herbicide family and is a systemic and selective herbicide. It is widely applied for killing weeds in farmland, specifically annual grasses and broad-leaved weeds in spring and winter wheat, winter rye, and spring and winter barley. This product 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.
Medchemexpress LLC Urethane-d5 | 73962-07-9 | 99.8% | 1 ML
Urethane-d5 is a deuterium labeled form of Urethane, also known as Ethyl carbamate. This compound is the ethyl ester of carbamic acid and is naturally occurring as a byproduct of fermentation in various food products. It demonstrates the ability to suppress bacterial, protozoal, sea urchin egg, and plant tissue growth in vitro. This product is intended for research applications only and is not sold to patients.
- Deuterium labeled compound
- Ethyl ester of carbamic acid
- Byproduct of fermentation
- Suppresses bacterial, protozoal, sea urchin egg, and plant tissue growth in vitro
- Suitable for use as a tracer
- Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
American Radiolabeled Chemicals Inc EZETIMIBE 10ME
Ezetimibe 10mg, solid, M.W. 409.40, CAS# 163222-33-1
Cayman Chemical MoclobemIde-d4 5mg
An internal standard for the quantification of moclobemide by GC- or LC-MS
Cambridge Isotope Laboratories L-Phenylalanine (13C9 99% 15N 99%) 0 5 g
L-Phenylalanine (13C9 99% 15N 99%) 0 5 g