Isotopically Labeled Compounds
Medchemexpress LLC Nifedipine-d6 | 1188266-14-9 | 98.0% | 352.37 g/mol | C17H12D6N2O6 | 10 MG
Nifedipine-d6 is a deuterium-labeled analogue of nifedipine supplied for analytical and research use. It is used as an internal standard or tracer in quantitative assays (NMR, GC-MS, LC-MS) and in drug metabolism and pharmacokinetic studies, providing consistent isotopic labeling for reliable measurements.
- Deuterium-labeled internal standard for quantitative assays
- Purity 98.0%
- Molecular weight 352.37 g/mol
- Molecular formula C17H12D6N2O6
- CAS number 1188266-14-9
- Storage: powder -20°C (3 years), 4°C (2 years)
Medchemexpress LLC Busulfan-d8 | 116653-28-2 | MFCD06658695 | 99.7% | 254.35 | C6H6D8O6S2 | 10 MG
Deuterium-labeled busulfan for use as an internal standard and tracer in quantitative analytical methods. It is supplied as a solid with high chemical and isotopic purity and is intended for research use and therapeutic drug monitoring.
- Intended for use as an internal standard and tracer in NMR, GC-MS, and LC-MS quantitative analysis.
- Molecular formula C6H6D8O6S2 and molecular weight 254.35.
- High purity (≈99.7%) and white to off-white solid appearance.
- Available in a 10 mg quantity suitable for analytical applications.
- Storage recommendations: powder at -20°C for long-term stability; in solvent at -80°C for short-term storage.
Medchemexpress LLC Propanoic-d5 acid, sodium salt | 202529-18-8 | 99.9% | 10 MG
Propanoic-d5 (sodium) is the deuterium-labeled sodium salt of propionic acid used as a stable isotope tracer in analytical and metabolic studies.
- Deuterium-labeled compound suitable as an internal standard or tracer in mass spectrometry and metabolic research.
- High chemical purity (99.91% by HPLC) for reliable analytical performance.
- Deuterium incorporation (d5) provides clear isotopic distinction from unlabeled analogs.
- Solid form, facilitating handling and long-term storage.
- Recommended storage: powder at -20°C (3 years) or 4°C (2 years); in solvent at -80°C (6 months) or -20°C (1 month).
Medchemexpress LLC Sulfamethoxazole-d4 | 1020719-86-1 | MFCD03425632 | 98.2% | 257.30 g/mol | C10H7D4N3O3S | 10 MG
Sulfamethoxazole-d4 is a deuterium-labeled analogue of the sulfonamide antibiotic sulfamethoxazole, supplied as a high-purity powder for analytical and tracer applications. Intended as an isotope-labeled internal standard for quantitative LC-MS and related studies; molecular formula C10H7D4N3O3S, molecular weight 257.30 g/mol, CAS 1020719-86-1.
- Deuterium-labeled internal standard for quantitative LC-MS analysis.
- High purity suitable for LC-MS and other analytical methods.
- Powder form for easy dissolution and aliquoting.
- Stable under recommended storage conditions for long-term use.
- Applicable to studies of bacterial folate metabolism and related assays.
Medchemexpress LLC Thymol-d13 | 1219798-93-2 | 10 MG
Thymol-d13 is the deuterium labeled Thymol. Thymol is the main monoterpene phenol occurring in essential oils isolated from plants belonging to the Lamiaceae family, and other plants such as those belonging to the Verbenaceae, Scrophulariaceae, Ranunculaceae and Apiaceae families. Thymol has antioxidant, anti-inflammatory, antibacterial and antifungal effects.
- 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 Piperacillin-d5 | 61477-96-1 | 96.0% | 522.59 | C23H22D5N5O7S | 10 MG
Piperacillin-d5 is a deuterium-labeled (d5) analogue of the β-lactam antibiotic piperacillin supplied as a solid powder for use as an internal standard and tracer in quantitative analyses by NMR, GC-MS, and LC-MS. The d5 labeling enables mass-based discrimination with minimal alteration of chemical properties, making it suitable for pharmacokinetic and bioanalytical studies.
- Deuterium-labeled (d5) internal standard for quantitative analysis.
- Solid powder form for analytical sample preparation.
- Purity approximately 96.0%.
- Molecular weight 522.59 g/mol; formula C23H22D5N5O7S.
- Offered in small pack sizes for analytical workflows (for example, 10 mg).
Cambridge Isotope Laboratories GLYCAN-FX2-13C-GAL4 (GALACTOSE-13C6, 99%), 500 PMOL
GLYCAN-FX2-13C-GAL4 (GALACTOSE-13C6, 99%), 500 PMOL
Cambridge Isotope Laboratories GLYCAN-O25-13C-GAL6 (GALACTOSE-13C6, 99%), 500 PMOL
GLYCAN-O25-13C-GAL6 (GALACTOSE-13C6, 99%), 500 PMOL
Cambridge Isotope Laboratories SPECTRA 9 (D, 97%+; 15N, 98%+), 1 L
SPECTRA 9 (D, 97%+; 15N, 98%+), 1 L
Cambridge Isotope Laboratories GLYCAN-O31-13C-GAL6 (GALACTOSE-13C6, 99%), 500 PMOL
GLYCAN-O31-13C-GAL6 (GALACTOSE-13C6, 99%), 500 PMOL
Cambridge Isotope Laboratories 17A-HYDROXYPREGNENOLONE (20,21-13C2,98%;16,16-D2,98%)100 UG/ML IN METHANOL, 1 ML
17A-HYDROXYPREGNENOLONE (20,21-13C2,98%;16,16-D2,98%)100 UG/ML IN METHANOL, 1 ML
Cambridge Isotope Laboratories ALPHA-KETOBUTYRIC ACID, SODIUM SALT (4-13C, 99%; 3,3,4,4-D4, 98%), 0.25 G
ALPHA-KETOBUTYRIC ACID, SODIUM SALT (4-13C, 99%; 3,3,4,4-D4, 98%), 0.25 G
Cambridge Isotope Laboratories MIXED FATTY ACIDS (U-13C, 98%+; U-D, 97%+), 1 G
MIXED FATTY ACIDS (U-13C, 98%+; U-D, 97%+), 1 G