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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6,001 – 6,015 of 8,793 results

6,001

Revvity Health Sciences Inc L-[³H(G)]-Serine,>97%, 250ÂµCi (9.25MBq)

L-[³H(G)]-Serine,>97%, 250ÂµCi (9.25MBq)

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6,002

Cayman Chemical Deoxycholic Acid-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 112076-61-6, 1 mg

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

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6,003

Revvity Health Sciences Inc UTP, [Î±-³²P]- 3000Ci/mmol 10mCi/ml , 1 mCi

UTP, [Î±-³²P]- 3000Ci/mmol 10mCi/ml , 1 mCi

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6,004

Medchemexpress LLC Sorafenib-13C,d3 | 1210608-86-8 | 98.4% | 468.84 | C2013CH13D3ClF3N4O3 | 10 MG

Sorafenib-13C,d3 is a stable isotope-labeled reference standard of sorafenib designed for research and analytical applications. It contains 13C and deuterium labels to provide a defined mass shift for use in LC-MS quantification, tracer studies, and pharmacokinetic experiments. The material is supplied at high purity suitable for use as an internal standard in analytical workflows.

High isotopic labeling for reliable mass-spectrometry traceability.
High purity suitable for quantitative analysis.
Provided in small mg-scale packaging for analytical workflows.
Intended for use as an internal standard, tracer, or reference material.
Consistent mass shift enables accurate quantitation in LC-MS methods.

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6,005

Medchemexpress LLC Thymidine-d3 | 74848-84-3 | MFCD01317525 | 99.8% | 245.25 | C10H11D3N2O5 | 10 MG

Thymidine-d3 is the deuterium-labeled analogue of thymidine used as a DNA synthesis inhibitor and cell-synchronizing agent. It is commonly used as a tracer or internal standard for quantitative analysis by NMR, GC-MS, or LC-MS, and to arrest cells at the G1/S boundary in cell cycle studies.

High chemical and isotopic purity (99.8%).
Suitable as a tracer and internal standard for NMR, GC-MS, and LC-MS.
Effective for cell synchronization by arresting cells at the G1/S boundary.
Solid powder form with recommended cold storage for stability.
Available in small research pack sizes including 10 mg for analytical work.

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6,006

Medchemexpress LLC 2-mercaptoethanol-d6 | 203645-37-8 | MFCD00209754 | 99.7% | 84.17 g/mol | C2D6OS | 100mg

2-Mercaptoethanol-d6 is deuterium labeled 2-Mercaptoethanol[1]

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6,007

Alkali Scientific L Ornithine HCl (L 2 5 Diaminopentanoic Acid), 1 Kilogram

L-Ornithine HCl is a key amino acid used in metabolic studies, particularly in the context of urea cycle research and nitric oxide synthesis. Available in a 1-kilogram bottle, it plays a critical role in the biosynthesis of arginine, which is essential for protein synthesis, cell division, and the production of polyamines. L-Ornithine is used as a supplement in cell culture media to promote cell growth and is often employed in animal studies related to liver function, muscle metabolism, and wound healing. It is also used in the synthesis of compounds involved in the regulation of cell growth and differentiation.

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6,008

Medchemexpress LLC Triphenylsulfonium-d5 chloride | 99.6% | 303.86 g·mol⁻¹ | C18H10D5ClS | 1 MG

Triphenylsulfonium-d5 chloride is a deuterium-labeled reagent used as an isotope-labeled analogue of triphenylsulfonium chloride for analytical and research applications. Supplied as a white to off-white solid with reported high purity, it is commonly used as a tracer and internal standard in quantitative NMR, GC-MS, and LC-MS workflows.

Deuterium-labeled internal standard for quantitative analysis.
High reported purity (≈99.6%).
Molecular formula C18H10D5ClS; molecular weight 303.86 g·mol⁻¹.
Available in small pack sizes suitable for analytical use, e.g., 1 mg.
White to off-white solid with documented analytical data (HNMR, RP-HPLC, MS, COA).
Recommended storage: 4°C sealed, protect from moisture; in solution store at -80°C for long-term stability.
Intended for research use only; not for human or animal therapeutic use.

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6,009

Cayman Chemical PAF C-16-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 211106-54-6, 1 mg

An internal standard for the quantification of PAF C-16 by GC- or LC-MS.

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6,010

Cayman Chemical Tipranavir-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 1217819-15-2, 1 mg

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

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6,011

Medchemexpress LLC Creatinine-13C | 1173022-95-1 | >99.9% | 5 MG

Creatinine-13C is the 13C-labeled Creatinine, a breakdown product of creatine phosphate in muscle that is usually produced at a fairly constant rate by the body. This product is intended for research use only and serves as a valuable tool in various analytical and research applications due to its stable heavy isotope label. It is particularly useful for precise quantitative analysis in studies involving pharmacokinetics and metabolic profiling.

Used as a tracer in research studies.
Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Incorporates stable heavy isotopes of carbon for drug development processes.
Can influence pharmacokinetic and metabolic profiles of drugs.
Molecular formula is C3¹³CH7N3O.

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6,012

Cayman Chemical IndomethacIn-d4 500ug

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

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6,013

Cayman Chemical Tolcapone-d4, Purity: ≥99% deuterated forms (d1-d4), CAS: 1246816-93-2, 1 mg

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

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6,014

Revvity Health Sciences Inc L-[³⁵S]-Methionine, 1mCi (37MBq), Specific Activity:>800Ci (29.6TBq)/mmole, 50mM Tricine, 10mM BME

L-[³⁵S]-Methionine, 1mCi (37MBq), Specific Activity:>800Ci (29.6TBq)/mmole, 50mM Tricine, 10mM BME

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6,015

Medchemexpress LLC Ethyl maltol-d5 | 4940-11-8 | 99.0% | 145.17 | 1 MG

Ethyl maltol-d5 is the deuterium labeled Ethyl maltol. Ethyl maltol is an orally active and important food additive and flavor enhancer. It is less toxic to rats and dogs and can enhance copper-mediated cytotoxicity and induce apoptosis in lung epithelial cells. 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.
Stable heavy isotopes have potential to affect the pharmacokinetic and metabolic profiles of drugs.

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Isotopically Labeled Compounds

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Medchemexpress LLC Sorafenib-13C,d3 | 1210608-86-8 | 98.4% | 468.84 | C2013CH13D3ClF3N4O3 | 10 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Thymidine-d3 | 74848-84-3 | MFCD01317525 | 99.8% | 245.25 | C10H11D3N2O5 | 10 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC 2-mercaptoethanol-d6 | 203645-37-8 | MFCD00209754 | 99.7% | 84.17 g/mol | C2D6OS | 100mg Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Triphenylsulfonium-d5 chloride | 99.6% | 303.86 g·mol⁻¹ | C18H10D5ClS | 1 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Creatinine-13C | 1173022-95-1 | >99.9% | 5 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Ethyl maltol-d5 | 4940-11-8 | 99.0% | 145.17 | 1 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More