Isotopically Labeled Compounds
Medchemexpress LLC N-heptanoylglycine-d2 | 3008541-77-0 | 95.0% | 189.25 | C9H15D2NO3 | 1 MG
N-Heptanoylglycine-d2 is the deuterium-labeled analogue of N-heptanoylglycine used as a stable isotope internal standard and tracer in analytical chemistry. It is a solid (white to off-white) compound with formula C9H15D2NO3 and molecular weight 189.25, supplied at high purity for quantitative NMR, GC-MS, and LC-MS studies.
- High isotopic labeling (d2) for reliable internal standard performance.
- Suitable for use as tracer or internal standard in NMR, GC-MS, and LC-MS.
- Solid, white to off-white appearance facilitating handling.
- Purity 95.0% to support quantitative analyses.
- Storage recommendations provided for long-term and in-solvent conditions.
Medchemexpress LLC DL-guanosine-13C,15N2 | 197227-95-5 | >98.0% | 283.24 g·mol⁻¹ | C10H13N5O5 | 1mg
Guanosine-13C 15N2 (DL-Guanosine-13C 15N2) is 13C and 15N labeled Guanosine[1]
Medchemexpress LLC Pregn-4-ene-3,20-dione-d9 | 15775-74-3 | MFCD01317491 | 99.7% | 323.52 | C21H21D9O2 | 10 MG
Progesterone-d9 is a deuterium-labeled analogue of the endogenous steroid hormone progesterone, provided as a solid for research use. It is intended for use as a tracer and internal standard in quantitative analytical methods and pharmacokinetic or metabolic studies.
- Deuterium-labeled tracer and internal standard for NMR, GC-MS, and LC-MS.
- Chemical formula C21H21D9O2.
- Molecular weight 323.52 g/mol.
- Supplier-listed purity ~99.7% (verify for critical use).
- Appearance: white to light yellow solid.
- Solubility: DMSO 50 mg/mL; may require sonication and warming.
- Storage: powder at -20°C; in solvent -80°C (6 months) or -20°C (1 month).
- Typical pack size: 10 mg.
Medchemexpress LLC Barnidipine-d5 | 2771469-19-1 | 99.0% | 496.57 | C27H24D5N3O6 | 1 MG
Barnidipine-d5 is a deuterium-labeled reference standard of barnidipine intended for use as a stable isotope internal standard in analytical and pharmacokinetic assays. It is supplied as a small-mass, high-purity material suitable for LC-MS/MS quantitation and method development.
- Deuterium-labeled analog (d5) to enable accurate internal standardization.
- High chemical purity (≈99.0%) for reliable analytical results.
- Molecular weight 496.57, formula C27H24D5N3O6.
- Suitable for LC-MS/MS method development and pharmacokinetic studies.
- Store sealed at -20°C; in solvent, store at -80°C for long-term stability.
Cambridge Isotope Laboratories 4-Chlorophenol (unlabeled) 100 ug/mL in nonane 1 2 mL
4-Chlorophenol (unlabeled) 100 ug/mL in nonane 1 2 mL
Cambridge Isotope Laboratories L-Carnitine clo4 3-hydroxyisovaleryl (unlabeled) 0 1 mg
L-Carnitine clo4 3-hydroxyisovaleryl (unlabeled) 0 1 mg
Cambridge Isotope Laboratories Chlorpyrifos (unlabeled) 100 ug/mL in nonane 1 2 mL
Chlorpyrifos (unlabeled) 100 ug/mL in nonane 1 2 mL
Cambridge Isotope Laboratories Algal lyophilized cells (U-D 98%) 1 g
Algal lyophilized cells (U-D 98%) 1 g
Cambridge Isotope Laboratories Sodium pyruvate (1-13C 99%) 0 25 g
Sodium pyruvate (1-13C 99%) 0 25 g
Medchemexpress LLC DL-Alanine-d3 | 53795-94-1 | 25 MG
DL-Alanine-d3 is the deuterium labeled DL-Alanine. DL-alanine, an amino acid, is the racemic compound of L- and D-alanine. It is used as a reducing and capping agent with silver nitrate aqueous solutions for nanoparticle production, and for research of transition metal chelation. DL-alanine is also a sweetener and plays a role in the glucose-alanine cycle between tissues and liver.
- 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 Fumaric acid-d2 | 24461-32-3 | MFCD00144378 | 99.0% | 118.08 g/mol | C4H2D2O4 | 10 MG
Fumaric acid-d2 is the deuterium-labeled isotopologue of fumaric acid used as a stable isotope reference standard and tracer for analytical and metabolic research. Supplied as a high-purity solid, it is suitable for mass spectrometry and NMR applications and is provided in small laboratory pack sizes for convenience.
- High purity suitable for analytical use.
- Deuterium-labeled (d2) isotopologue for tracer studies.
- White to off-white solid powder with specified storage conditions.
- Soluble in DMSO at ≥100 mg/mL for solution preparation.
- Available in multiple small pack sizes for laboratory workflows.
Cambridge Isotope Laboratories 2 3 3 4 4 5 5 6-OctaBDE (BDE-205) (13C12 99%) 50 ug/mL in nonane 1 2 mL
2 3 3 4 4 5 5 6-OctaBDE (BDE-205) (13C12 99%) 50 ug/mL in nonane 1 2 mL
Cambridge Isotope Laboratories DL-Homocysteine (3 3 4 4-D4 98%) 5 mg
DL-Homocysteine (3 3 4 4-D4 98%) 5 mg