Isotopically Labeled Compounds

Chemicals to which isotopes have been attached in order to label specific atoms. Isotopically labeled compounds are commonly used in synthetic chemistry, characterization techniques such as NMR, and biology.

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346 – 360 of 8,797 results

346

Revvity Health Sciences Inc Phosphorus-32 Radionuclide, 2mCi (74MBq), Specific Activity: 8500-9120Ci (314-337TBq)/mmol, Orthophosphoric Acid in 1mL Water

Phosphorus-32 Radionuclide, 2mCi (74MBq), Specific Activity: 8500-9120Ci (314-337TBq)/mmol, Orthophosphoric Acid in 1mL Water

Pricing & Availability

347

Cayman Chemical Tyramine-d4 (hydrochloride), Purity: ≥99% deuterated forms (d1-d4), CAS: 1189884-47-6, 5 mg

An internal standard for the quantification of tyramine by GC- or LC-MS

Pricing & Availability

348

Medchemexpress LLC Creatinine-13C | 1173022-95-1 | 99.9% | 1 MG

Creatinine-13C is a 13C-labeled version of Creatinine. Creatinine, also known as NSC13123, is a break-down product of creatine phosphate found in muscle. It is typically produced by the body at a fairly constant rate.

Used as a tracer
Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Isotope-labeled compound

Pricing & Availability

349

Cambridge Isotope Laboratories D-GLUCOSE (1-13C, 98-99%), 1 G, 40762-22-9

D-GLUCOSE (1-13C, 98-99%), 1 G, 40762-22-9

Pricing & Availability

350

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.

Pricing & Availability

351

Medchemexpress LLC 1,1-Dioxothiolan-d8 | 51219-88-6 | 99.9% | 128.22 | 5 MG

1,1-Dioxothiolan-d8 is the deuterium labeled 1,1-Dioxothiolan. 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.

Stable heavy isotopes for drug development process
Potential to affect pharmacokinetic and metabolic profiles

Pricing & Availability

352

Cambridge Isotope Laboratories Glycine (2-13C 99% 15N 98%) 1 g

Glycine (2-13C 99% 15N 98%) 1 g

Pricing & Availability

353

Medchemexpress LLC Sitagliptin-d4 phosphate | 1432063-88-1 | 99.5% | C16H14D4F6N5O5P | 10MG

Sitagliptin-d4 phosphate is the deuterium-labeled isotopologue of sitagliptin phosphate provided as an analytical reference standard. It is used as a labeled internal standard in LC-MS and other bioanalytical assays to enable accurate quantification of sitagliptin and to support studies of DPP-4 inhibition.

Deuterium-labeled internal standard for accurate quantification.
High purity (≈99.5%) suitable for analytical use.
Provides clear isotopic distinction in mass spectrometry assays.
Stable when stored at 4°C; in solvent store at -80°C (6 months) or -20°C (1 month).
Supplied in small pack sizes convenient for laboratory use.