Isotopically Labeled Compounds
Cambridge Isotope Laboratories ACETONITRILE (1,2-13C2, 99%), 1 G, 1722-25-4
ACETONITRILE (1,2-13C2, 99%), 1 G, 1722-25-4
Medchemexpress LLC Propylparaben-d4 | 1219802-67-1 | 99.6% | 184.23 | C10H8D4O3 | 10 MG
Propylparaben-d4 is the deuterium-labeled analogue of propylparaben supplied as a high-purity solid for use as an analytical standard in mass spectrometry and other quantitative assays.
- Deuterated internal standard for analytical quantification.
- High purity suitable for reference and analytical work.
- Solid form for stable storage and handling.
- Offered in a 10 mg quantity for laboratory use.
- CAS number 1219802-67-1 for unambiguous identification.
Cambridge Isotope Laboratories SPECTRA 9 (D, 97%+; 15N, 98%+), 0.5 L
SPECTRA 9 (D, 97%+; 15N, 98%+), 0.5 L
Medchemexpress LLC Melperone-d4 (hydrochloride) | 1219798-80-7 | 99.8% | 500 UG
Melperone-d4 hydrochloride is the deuterium labeled Melperone hydrochloride. Melperone hydrochloride is a butyrophenone with atypical antipsychotic properties. It is a multireceptor antagonist with Kds of 102 nM, 180 nM, 180 nM, and 150 nM for 5-HT2A, dopamine D2, α1-adrenergic, and α2-adrenergic receptors, respectively. Melperone hydrochloride has weak binding to histamine H1, 5-HT2C, 5-HT1A, 5-HT1D, and muscarinic receptors, with Kd values of 580 nM, 2100 nM, 2200 nM, 3400 nM, >10000 nM, respectively. It is also a CYP2D6 inhibitor and can be used for the study of schizophrenia and agitation in the elderly.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Menaquinone-4-d7 | 1233937-25-1 | ≥99% | 500 UG
Menaquinone-4-d7 (Vitamin K2 (MK-4)-d7) is the deuterium labeled Menaquinone-4. Menaquinone-4 is a vitamin K, used as a hemostatic agent and as an adjunctive therapy for the pain of osteoporosis. 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.
- Deuterium labeled Menaquinone-4
- Used as a hemostatic agent
- Adjunctive therapy for pain of osteoporosis
- Stable heavy isotopes used as tracers for quantitation during drug development
- Potential to affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC HEPES-d18 | 203805-87-2 | 99.9% | 5 MG
HEPES-d18 is the deuterium-labeled HEPES. HEPES, a nonvolatile zwitterionic chemical buffering agent, is broadly applied in cell culture. HEPES is effective at pH 6.8 to 8.2. HEPES is also a potent inducer of lysosome biogenesis. For research use only.
- 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.
- 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.
Medchemexpress LLC Stearic acid-d5 | 211443-83-3 | 50 MG
Stearic acid-d5 is the deuterium labeled Stearic acid. Stearic acid is a long chain dietary saturated fatty acid which exists in many animal and vegetable fats and oils.
- Stable heavy isotopes have been incorporated into drug molecules as tracers for quantitation.
- Deuteration has the potential to affect pharmacokinetic and metabolic profiles of drugs.
Medchemexpress LLC Inosine-2,8-d2 | 697807-01-5 | 99.7% | 270.24 | C10H10D2N4O5 | 10 MG
Inosine-2,8-d2 is a deuterium-labeled inosine supplied as a solid reference standard for analytical and research use, including mass spectrometry and quantitative assays.
- Deuterated inosine for isotopic labeling and internal standards.
- High purity: 99.7%.
- Molecular weight 270.24 g/mol and chemical formula C10H10D2N4O5.
- Solid form suitable for laboratory handling.
- Recommended storage under nitrogen at -20°C; in solution store at -80°C for up to 6 months.
- Packaged as 10 MG for small-scale analytical use.
Medchemexpress LLC L-Isoleucine-15N,d10 | 142.23 | 50MG
L-Isoleucine-15N,d10 is the deuterium and 15N-labeled L-Isoleucine. It is a nonpolar hydrophobic and essential amino acid.
- Deuterium and 15N-labeled.
- Nonpolar hydrophobic amino acid.
- Essential amino acid.
- Powder storage: -20°C for 3 years, 4°C for 2 years.
- In solvent storage: -80°C for 6 months, -20°C for 1 month.
Medchemexpress LLC L-alanine-13C3, 15N | 202407-38-3 | MFCD19443802 | 98.0% | 93.06 g·mol⁻1 | 13C3H7 15NO2 | 10 MG
L-alanine-13C3,15N is an isotopically labeled form of the amino acid L-alanine in which three carbon atoms are 13C and the nitrogen is 15N. Supplied as a 10 mg vial for research use, it serves as a stable isotope internal standard, tracer, or reference material for analytical and biochemical workflows. Purity is 98.0% and molecular weight is 93.06 g·mol⁻1.
- Isotopically labeled standard for mass spectrometry and metabolomics.
- Supplied in a small, research-scale package suitable for analytical assays.
- High purity suitable for quantitative internal standard applications.
- Stable, non-radioactive tracer for metabolic and pathway studies.
- Provided with batch-specific datasheet and certificate of analysis for traceability.
![Medchemexpress LLC L-alanine-13C2,15N | 312623-85-1 | MFCD34676307 | 99.0% | 92.07 g/mol | C[13C]2H7[15N]O2 | 10 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000296328.png-250.jpg)
Medchemexpress LLC L-alanine-13C2,15N | 312623-85-1 | MFCD34676307 | 99.0% | 92.07 g/mol | C[13C]2H7[15N]O2 | 10 MG
L-Alanine-13C2,15N is L-alanine labeled with two 13C atoms and one 15N atom, supplied as a high-purity isotopically labeled standard for use in analytical and metabolic studies.
- Isotopically labeled with two 13C and one 15N
- High purity: 99.0%
- Suitable as a tracer and internal standard for NMR, GC-MS, and LC-MS
- Molecular weight: 92.07 g/mol
- Available as a 10 MG vial for analytical use
Medchemexpress LLC Trigonelline-d3 chloride | 6138-41-6 | 99.6% | 176.62 | C7H5D3ClNO2 | 10 MG
Trigonelline-d3 chloride is a deuterium-labeled analytical standard of trigonelline hydrochloride supplied as a white to off-white solid intended for research use. It provides a stable-isotope internal standard for quantitative GC- or LC-MS assays.
- Deuterium-labeled trigonelline chloride for use as an internal standard.
- High purity (99.6%) suitable for analytical applications.
- White to off-white solid; solid form for easy handling and storage.
- Soluble in DMSO (5 mg/mL) with warming or sonication recommended.
- Stable under sealed storage at 4°C; shorter-term storage guidance for solutions provided.
- Available in small pack sizes (including 10 mg) for standard laboratory use.
Medchemexpress LLC D-(+)-galactose-13C-2 | 478518-56-8 | 99.9% | 181.15 g/mol | C5^13CH12O6 | 10 MG
D-Galactose-13C-2 is D-galactose labeled with a single 13C isotope at the C-2 position. It is supplied as a stable isotope-labeled standard for metabolic tracing, isotope dilution quantification, and mass spectrometry applications; for research use only.
- 13C label at C-2 for metabolic tracing.
- High chemical purity: 99.9%.
- Molecular weight 181.15 g/mol.
- CAS number 478518-56-8.
- Supplied as a 10 mg vial suitable for analytical use.
- Stable isotope standard for quantitative and qualitative assays.
Cambridge Isotope Laboratories SPECTRA 9 (13C, 98%; D, 97%+; 15N, 98%), 1 L
SPECTRA 9 (13C, 98%; D, 97%+; 15N, 98%), 1 L
![Medchemexpress LLC Levodopa (L-3,4-dihydroxyphenylalanine) | 586971-29-1 | MFCD35325168 | 98.0% | 198.18 g/mol | C8[13C]H11NO4 | 10 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000296271.png-250.jpg)
Medchemexpress LLC Levodopa (L-3,4-dihydroxyphenylalanine) | 586971-29-1 | MFCD35325168 | 98.0% | 198.18 g/mol | C8[13C]H11NO4 | 10 MG
L-DOPA-13C is a carbon-13 isotopically labeled form of L-DOPA (levodopa) supplied as a research-grade stable isotope tracer for use as an internal standard or metabolic tracer in biochemical and pharmacokinetic studies.
- Isotopically labeled with a single 13C atom for tracer and mass spectrometry applications.
- Provided in small milligram quantities suitable for analytical and research use.
- High reported purity of 98.0% supports accurate quantitation and reduced impurity interference.
- Molecular weight approximately 198.18 g/mol, consistent with labeled L-DOPA.
- Storage recommended at 4°C under nitrogen; in solvent, store at -80°C (6 months) or -20°C (1 month) under nitrogen.