Isotopically Labeled Compounds
Medchemexpress LLC Darolutamide-d4 | 2484757-20-0 | 98.6% | 402.87 g/mol | C19H15D4ClN6O2 | 10 MG
Darolutamide-d4 is a deuterium-labeled analogue of the androgen receptor antagonist darolutamide supplied as a solid for research use. It is used as a tracer or internal standard in quantitative analytical methods such as NMR, GC-MS, and LC-MS and reflects the parent compound's AR antagonist profile.
- Deuterium-labeled internal standard for analytical assays.
- Intended for research use only; not for human or clinical use.
- High purity (≈98.6%).
- Soluble in DMSO at 100 mg/mL; sonication recommended.
- Powder storage: -20°C (multi-year stability); in solution: -80°C for long-term storage.
- White to off-white solid; molecular weight ~402.87 g/mol.
Medchemexpress LLC Nadolol-d9 (SQ-11725-d9) | 94513-92-5 | 97.0% | 1 MG
Nadolol-d9 is the deuterium labeled Nadolol. Nadolol is a non-selective and orally active β-adrenergic receptors blocker. It is for research use only and 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.
American Radiolabeled Chemicals Inc TUBERCIDINE 3H 1LC
Tubercidin-8-3H 1mCi in ethanol:water (1:1), 1 mCi/ml, S.A. 10-20 Ci/mmol, M.W. 266.25
Sigma Aldrich Fine Chemicals Biosciences Acetic anhydride-13C4,d6 99 atom % 13C, 97 atom % D | 285977-77-7 | MFCD00190254 | 100MG
Acetic anhydride-13C4,d6 99 atom % 13C, 97 atom % D | Purity: 99% (CP) | Mol Wt: 112.1 | 285977-77-7 | MFCD00190254 | 100MG
Medchemexpress LLC 1-Bromotridecane-d4 25mg
1-Bromotridecane-d4 is the deuterium labeled 1-Bromotridecane[1]
Medchemexpress LLC Everolimus-d4 | 1338452-54-2 | MFCD21363580 | 98.7% | 962.25 | C53H79D4NO14 | 1 MG
Everolimus-d4 is the deuterium-labeled analogue of everolimus used as a stable isotope internal standard for quantitative mass spectrometry and for research into mTOR-related biology.
- Deuterium-labeled internal standard for LC-MS and GC-MS quantification of everolimus.
- High analytical purity suitable for quantitative assays.
- Available in small research-scale quantities (e.g., 500 μg, 1 mg, 5 mg, 10 mg).
- Molecular formula C53H79D4NO14 and molecular weight ≈962.25 g/mol.
- Intended for research use only; not for human, clinical, or diagnostic use.
Cambridge Isotope Laboratories D-GLUCOSE (5-13C, 98%), 0.5 G, 120388-24-1
D-GLUCOSE (5-13C, 98%), 0.5 G, 120388-24-1
Cayman Chemical AvnafIl-13C-d3 1mg
An internal standard for the quantification of avanafil by GC- or LC-MS
Cambridge Isotope Laboratories L-ASPARTIC ACID (3-13C, 98-99%), 0.25 G
L-ASPARTIC ACID (3-13C, 98-99%), 0.25 G
Cambridge Isotope Laboratories Benzoic acid calibrant for qNMR 15mM benzoic acid in DMSO-D6 (50 L fill volume) 1 7mm tube
Benzoic acid calibrant for qNMR 15mM benzoic acid in DMSO-D6 (50 L fill volume) 1 7mm tube
Medchemexpress LLC Olaparib-d4-1 | 2143107-55-3 | 98.6% | 438.49 g/mol | C24H19D4FN4O3 | 5 MG
Olaparib-d4-1 is a deuterium-labeled analogue of olaparib used as a stable-isotope reference standard for analytical and research applications. It provides a defined mass shift while preserving chemical behavior of the parent compound, enabling accurate quantification and tracer studies in mass spectrometry and related assays.
- Deuterium-labeled reference standard for LC-MS analyses.
- Molecular weight 438.49 g/mol with defined chemical formula.
- High purity suitable for quantitative analytical workflows.
- Offered in small measured packages for easy sample preparation.
- Datasheet and safety data sheet available for handling and characterization.
Medchemexpress LLC Ethyl 4-hydroxybenzoate-d4 | 1219795-53-5 | 170.20 | C9H6D4O3 | 10 MG
Ethylparaben-d4 is the deuterium-labeled analog of ethyl 4-hydroxybenzoate supplied for research use as an isotopically labeled internal standard or tracer for quantitative analysis by NMR, GC-MS, and LC-MS. It contains four deuterium atoms (d4) to enable mass discrimination and accurate quantitation.
- Deuterium-labeled internal standard for quantitative analysis.
- Suitable for NMR, GC-MS, and LC-MS applications.
- Molecular formula C9H6D4O3 and molecular weight 170.20.
- Available in small analytical quantities (commonly 1 mg, 5 mg, 10 mg).
- For research use only; not for human or clinical use.
Medchemexpress LLC DEHP-d4 (Bis(2-ethylhexyl) phthalate-d4) | 93951-87-2 | 99.9% | 50 MG
DEHP-d4 is the deuterium labeled DEHP. DEHP (Bis(2-ethylhexyl) phthalate) is an endogenous metabolite.
- This compound can be used as a tracer.
- This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Cambridge Isotope Laboratories 13C-Labeled Coplanar PCB Mix PCBs-77/81/126/169 1 ug/mL in nonane 3 mL
13C-Labeled Coplanar PCB Mix PCBs-77/81/126/169 1 ug/mL in nonane 3 mL