Isotopically Labeled Compounds
Medchemexpress LLC Busulfan-d8 | 116653-28-2 | MFCD06658695 | 99.7% | 254.35 | C6H6D8O6S2 | 10 MG
Deuterium-labeled busulfan for use as an internal standard and tracer in quantitative analytical methods. It is supplied as a solid with high chemical and isotopic purity and is intended for research use and therapeutic drug monitoring.
- Intended for use as an internal standard and tracer in NMR, GC-MS, and LC-MS quantitative analysis.
- Molecular formula C6H6D8O6S2 and molecular weight 254.35.
- High purity (≈99.7%) and white to off-white solid appearance.
- Available in a 10 mg quantity suitable for analytical applications.
- Storage recommendations: powder at -20°C for long-term stability; in solvent at -80°C for short-term storage.
Cayman Chemical EntecavIr-d2 1mg
An internal standard for the quantification of entecavir by GC- or LC-MS
Cambridge Isotope Laboratories L-CYSTEINE (13C3, 97-99%; D3, 97-99%; 15N, 97-99%), 0.25 G
L-CYSTEINE (13C3, 97-99%; D3, 97-99%; 15N, 97-99%), 0.25 G
Cambridge Isotope Laboratories ACETIC ACID-D4 (D, 99.5%), 10 X 0.5ML, 1186-52-3
ACETIC ACID-D4 (D, 99.5%), 10 X 0.5ML, 1186-52-3
Medchemexpress LLC D-ribose-d5 | 99.1% | 155.16 g/mol | C5H5D5O5 | 5 MG
D-Ribose-d5 is the deuterium-labeled form of D-ribose (C5H5D5O5) used as a stable-isotope tracer and internal standard for analytical workflows. It is intended for quantitative metabolomics, tracer experiments, and structural studies by mass spectrometry and NMR, providing consistent performance in metabolic pathway analysis.
- Stable isotope-labeled tracer for metabolic studies.
- High isotopic purity for reliable quantitation.
- Suitable as an internal standard in MS and NMR assays.
- Available in analytical sizes (1-100 mg).
- Supports metabolic pathway tracing and flux analysis.
Medchemexpress LLC Adipic acid-d8 | 52089-65-3 | 99.7% | 154.19 g/mol | C6H2D8O4 | 25 MG
Adipic acid-d8 (hexanedioic acid-d8) is a deuterium-labeled adipic acid used as a stable isotope standard and tracer in analytical chemistry. Supplied as a high-purity solid, it supports accurate quantitation and method development in mass spectrometry and related analytical workflows.
- High isotopic enrichment and chemical purity for accurate mass spectrometry.
- Solid form simplifies storage and handling.
- Available in small milligram pack sizes for analytical workflows.
- Molecular formula C6H2D8O4; molecular weight 154.19 g/mol.
- Commonly used as an internal standard, tracer, and analytical reference.
Cayman Chemical GrnIsetron-d3 1mg
An internal standard for the quantification of granisetron by GC- or LC-MS
Cayman Chemical DIdnosIn-d2 500ug
An internal standard for the quantification of didanosine by GC- or LC-MS
Medchemexpress LLC Epicoprostanol-d5 5mg
Epicoprostanol-d5 is the deuterium labeled Epicoprostanol Epicoprostanol is the compound found in adipocere[1][2]
![Revvity Health Sciences Inc Choline Chloride, [Methyl-<sup>3</sup>H]-, 1mCi (37MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502812733.jpg-250.jpg)
Revvity Health Sciences Inc Choline Chloride, [Methyl-3H]-, 1mCi (37MBq)
Choline Chloride, [Methyl-3H]-, 1mCi (37MBq)
Medchemexpress LLC 1,3,5-Triazine-2,4-diamine, 6-chloro-N-(ethyl-d5)-N'-(1-methylethyl)- | 163165-75-1 | 1 MG
Atrazine-d5 is deuterium labeled Atrazine, primarily used for controlling certain annual broadleaf and grass weeds. It inhibits photophosphorylation but typically does not cause lethality or permanent cell damage in the short term. Deuterium substitution can impact the pharmacokinetic and metabolic profiles of drugs, making this compound suitable for use as a tracer or an internal standard.
- 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 are incorporated for quantitation during drug development.
- Deuteration can affect pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Ponesimod-d7 1mg | 1MG
Ponesimod-d7 (ACT-128800-d7) is the deuterium-labeled Ponesimod (HY-10569) Ponesimod-d7 (ACT-128800) is a potent selective and orally active agonist of S1P1 with an IC50 of 6 nM in a radioligand binding assay Ponesimod-d7 activates S1P1-mediated signal transduction with high potency (EC50 5 7 nM) Ponesimod-d7 can protect against lymphocyte-mediated tissue inflammation[1 [2 [3
Cambridge Isotope Laboratories 1 2 4 5-Tetrachlorobenzene (13C6 99%) 5 mg
1 2 4 5-Tetrachlorobenzene (13C6 99%) 5 mg
Cambridge Isotope Laboratories Bis(2-ethylhexyl)phthalate (ring-D4 98%) 0 1 g
Bis(2-ethylhexyl)phthalate (ring-D4 98%) 0 1 g