Isotopically Labeled Compounds
Sigma Aldrich Fine Chemicals Biosciences L Alanne 3 13C 99 atom 1500MG
L Alanne 3 13C 99 atom 1500MG
Cambridge Isotope Laboratories n-Heptadecane (D36 98%) (5% related per-deuterated alkanes) CP 95% 5 g
n-Heptadecane (D36 98%) (5% related per-deuterated alkanes) CP 95% 5 g
Medchemexpress LLC Palmitic acid-d31 | 39756-30-4 | 287.62 | 5 MG
Palmitic acid-d31 is a deuterium-labeled palmitic acid, a long-chain saturated fatty acid commonly found in both animals and plants. It can induce glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in mouse granulosa cells. This compound is valuable as a tracer or an internal standard for quantitative analysis in various spectroscopic methods, and its deuterium labeling offers potential benefits for studying pharmacokinetic and metabolic profiles.
- Used as a tracer
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuterium labeling for pharmacokinetic and metabolic studies
Medchemexpress LLC Methotrexate-d3 diammonium | 00-00-0 | MFCD08063571 | 99.7% | 491.52 | C20H25D3N10O5 | 5 MG
Methotrexate-d3 diammonium is a deuterium-labeled analog of methotrexate provided as the diammonium salt for research use. It serves as a stable isotope internal standard and analytical reference for LC-MS, pharmacokinetic, and tracer studies, supplied in small milligram quantities with high isotopic purity.
- Deuterium-labeled internal standard for mass spectrometry.
- High purity (≈99.7%) suitable for analytical applications.
- Diammonium salt form for improved handling and stability.
- Soluble in DMSO for easy sample preparation.
- Available in small milligram pack sizes for research use.
Medchemexpress LLC 1,2-dibromoethane-d4 | 22581-63-1 | MFCD00037499 | 99.0% | 191.89 g/mol | C2D4Br2 | 1 G
1,2-dibromoethane-d4 is the deuterium-labeled (d4) isotopologue of 1,2-dibromoethane used as an analytical standard and solvent in research and spectroscopic applications. It provides high isotopic enrichment and chemical purity suitable for NMR, tracer, and synthesis work.
- Deuterium-labeled (d4) isotopologue of 1,2-dibromoethane.
- Isotopic purity ~99 atom % D.
- Assay purity 99.0%.
- Molecular formula C2D4Br2; molecular weight 191.89 g/mol.
- Liquid at ambient temperature; supplied in 1 G packages.
- Intended for research and analytical applications.
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 AMMONIUM NITRATE (15N2, 98%+), 1 G, 43086-60-8
AMMONIUM NITRATE (15N2, 98%+), 1 G, 43086-60-8
Medchemexpress LLC Mephenytoin-d5 | 1185032-66-9 | >98.72% | 1 MG
Mephenytoin-d5 is a deuterium labeled form of Mephenytoin, an anticonvulsant that acts as a substrate for CYP2C19 and CYP2B6. It is commonly utilized as a tracer and internal standard for quantitative analysis methods such as NMR, GC-MS, or LC-MS.
- Can be used as a tracer for quantitative analysis
- Can be used as an internal standard for quantitative analysis
- Deuteration may affect pharmacokinetic and metabolic profiles
Medchemexpress LLC Octanal-d16 | 1219794-66-7 | 5 MG
Octanal-d16 is a deuterium-labeled octanal, a fragrant aldehyde known for its antioxidant and antibacterial properties. It has shown antifungal effects against *G. citri-aurantii* by disrupting cell membrane integrity and causing cellular component leakage. Furthermore, Octanal exhibits cytotoxicity towards HeLa cells, with an IC50 value of 3.5 μg/mL.
- 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 the potential to affect the pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Α-Vitamin E-d6 | 113892-08-3 | 5 MG
α-Vitamin E-d6 is a deuterium-labeled form of α-Vitamin E, intended for research use only. This compound serves as a tracer and internal standard for quantitative analysis via methods like NMR, GC-MS, or LC-MS. Incorporating stable heavy isotopes such as deuterium can influence the pharmacokinetic and metabolic profiles of drugs during development. It has a molecular weight of 436.74, a chemical formula of C29H44D6O2, and appears as a light yellow to yellow oil with a purity of 98.85%.
- Used as a tracer
- Functions as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
- Deuterium labeling can impact pharmacokinetic and metabolic profiles
Medchemexpress LLC Indole-13C | 85597-55-3 | 118.14 | 5 MG
Indole-13C is the 13C labeled Indole, which is an endogenous metabolite. It can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS. Stable heavy isotopes like Indole-13C are incorporated into drug molecules as tracers for quantitation during drug development.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Cambridge Isotope Laboratories DEOXYCHOLIC ACID (2,2,4,4,11,11-D6, 98%), 10 MG
DEOXYCHOLIC ACID (2,2,4,4,11,11-D6, 98%), 10 MG
Cambridge Isotope Laboratories L-LYSINE:2HCL (3,3,4,4,5,5,6,6-D8, 98%), 0.25 G
L-LYSINE:2HCL (3,3,4,4,5,5,6,6-D8, 98%), 0.25 G
Medchemexpress LLC 5α-cholestane-2,2,3,3,4,4-d6 | 358731-18-7 | MFCD01861631 | >98.0% | C27H42D6 | 10MG
5α-Cholestane-d6 is the deuterium-labeled (d6) analog of 5α-cholestane supplied as an isotope-labeled reference standard for analytical and synthetic applications. It is intended for use as an internal standard in mass spectrometry, for tracer studies, and for synthetic chemistry where a high-purity, isotopically enriched cholestane derivative is required.
- Deuterium-labeled standard (d6) for isotope dilution and tracing.
- High chemical purity (>98.0%) suitable for analytical use.
- Isotopic enrichment approximately 95 atom % D for clear mass shift.
- Molecular formula C27H42D6; molecular weight 378.71.
- Provided in small quantities appropriate for reference and analytical workflows.
Cayman Chemical Methomyl-d3 25mg
An internal standard for the quantification of methomyl by GC- or LC-MS