Isotopically Labeled Compounds

Medchemexpress LLC MEDCHEMEXPRESS LLC

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5000379892 ERIBULIN-D3 MESYLAT 500UG

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Cayman Chemical PerphenazIn-d4 5mg

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

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Medchemexpress LLC Rifabutin-d7 | 2747918-39-2 | 98.4% | 854.05 | 500 UG

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Rifabutin-d7 is the deuterium labeled Rifabutin, a semisynthetic ansamycin antibiotic with potent antimycobacterial properties, which inhibits DNA-dependent RNA polymerase. It is intended 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 been incorporated into drug molecules for quantitation during the drug development process
• Deuteration has potential to affect pharmacokinetic and metabolic profiles of drugs

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Cayman Chemical StearIc AcId-d2 500mg

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

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Cambridge Isotope Laboratories Toluene-D8 100% (D 99 94%) 5 mL

Toluene-D8 100% (D 99 94%) 5 mL

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Medchemexpress LLC Dotriacontane-d66 | 62369-68-0 | 99.09% | 517.27 | 50 MG

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Dotriacontane-d66 is the deuterium labeled Dotriacontane. It can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. Deuteration has the potential to affect the pharmacokinetic and metabolic profiles of drugs.

• Can be used as a tracer
• Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS

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Medchemexpress LLC 5-Methylcytosine-d4 | 1219795-15-9 | 129.15 | 1 MG

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5-Methylcytosine-d4 is the deuterium labeled 5-Methylcytosine, a well-characterized DNA modification in prokaryotes and eukaryotes. It forms symmetrical methylation on CpG dinucleotides in DNA, stabilizes tRNA/rRNA structure in RNA, and affects mRNA translation. It can be oxidized to generate 5hmC, 5fC, and 5caC, and is used in epigenetics, developmental biology, and the study of diseases such as colorectal cancer and hepatocellular carcinoma.

• Can be used as a tracer.
• Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
• Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.

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Medchemexpress LLC Liraglutide-13C6,15N TFA | 204656-20-2 | >97.1% | 3758.15 | 1 MG

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Liraglutide-13C6,15N TFA is a 13C and 15N labeled version of Liraglutide. Liraglutide is known as a glucagon-like peptide-1 (GLP-1) receptor agonist, primarily studied for its role in type 2 diabetes mellitus.

• Can be used as a tracer
• Serves as an internal standard for quantitative analysis
• Suitable for NMR, GC-MS, or LC-MS applications

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Medchemexpress LLC N-Fmoc-leucine-d3 | 538372-74-6 | 99.3% | 356.43 | C21H20D3NO4 | 10 MG

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Fmoc-leucine-d3 is the deuterium-labeled N-Fmoc derivative of L-leucine supplied for research use as a stable isotope-labeled building block. It is intended for peptide synthesis and as an internal standard in mass spectrometry, providing a consistent mass shift and high purity for analytical and synthetic workflows.

• Deuterium-labeled building block for peptide synthesis.
• Suitable as an internal standard for LC-MS quantitation.
• Provides a predictable +3 Da mass shift for isotopic labeling.
• High purity for analytical applications.
• Available in small-scale quantities for method development and standards.

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Medchemexpress LLC N-(4-hydroxyphenyl-2,3,5,6-d4)-acetamide | 64315-36-2 | 99.6% | C8H5D4NO2 | 1 ML

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Acetaminophen-d4 is the deuterium-labeled form of Acetaminophen (Paracetamol), a selective cyclooxygenase-2 (COX-2) inhibitor and widely used antipyretic and analgesic agent. It also acts as a potent hepatic N-acetyltransferase 2 (NAT2) inhibitor, serving as a tracer and internal standard for quantitative analysis in various spectroscopic methods.

• Deuterium-labeled form of acetaminophen
• Selective cyclooxygenase-2 (COX-2) inhibitor
• Widely used antipyretic and analgesic agent
• Potent hepatic N-acetyltransferase 2 (NAT2) inhibitor
• Used as a tracer in drug development
• Internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
• Stable heavy isotopes for pharmacokinetic and metabolic studies

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Cambridge Isotope Laboratories Glycan-N35-13C-Gal6 6 6 ([galactose-13C6 99%]3) 500 pmol

Glycan-N35-13C-Gal6 6 6 ([galactose-13C6 99%]3) 500 pmol

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Cambridge Isotope Laboratories 0 1M 15N-Urea 0 1M 13CH3OH in DMSO-D6 100% 1 5mm tube

0 1M 15N-Urea 0 1M 13CH3OH in DMSO-D6 100% 1 5mm tube

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Cambridge Isotope Laboratories Sodium monofluoroacetate (13C2 99% 2 2-D2 98%) CP 90% 0 01 g

Sodium monofluoroacetate (13C2 99% 2 2-D2 98%) CP 90% 0 01 g

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Cambridge Isotope Laboratories Boric-11 acid (11B 99%) 5 g

Boric-11 acid (11B 99%) 5 g

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Cambridge Isotope Laboratories cis-1 2 3 6-Tetrahydrophthalic anhydride (ring-3 3 4 5 6 6- D6 98%) 0 1 g

cis-1 2 3 6-Tetrahydrophthalic anhydride (ring-3 3 4 5 6 6- D6 98%) 0 1 g

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