Isotopically Labeled Compounds
Medchemexpress LLC Acyclovir-d4 | 1185179-33-2 | 98.7% | 229.23 | C8H7D4N5O3 | 10 MG
Acyclovir-d4 is a deuterium-labeled analogue of the antiviral acyclovir provided for research use. It is intended as a stable-isotope tracer or internal standard for analytical assays and pharmacokinetic studies, enabling accurate quantitation and method validation. The compound is supplied as a high-purity solid suitable for LC-MS/MS and related analytical workflows.
- Deuterium-labeled analog for tracer and internal standard use.
- High purity suitable for analytical assays and method validation.
- Stable solid form with defined storage recommendations.
- Supports quantitative LC-MS/MS and pharmacokinetic analyses.
- Available in small, pre-weighed quantities for method development.
Medchemexpress LLC Dopamine-13C hydrochloride | 335081-04-4 | 99.7% | 5 MG
Dopamine-13C (hydrochloride) is the 13C labeled Dopamine hydrochloride (ASL279). It is 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
Cambridge Isotope Laboratories DL-NORMETANEPHRINE:HCL (A,B,B-D3, 98%), 0.01 G, 1085333-97-6
DL-NORMETANEPHRINE:HCL (A,B,B-D3, 98%), 0.01 G, 1085333-97-6
Cayman Chemical HypoxnthIn-d4 5mg
An internal standard for the quantification of hypoxanthine by GC- or LC-MS
Medchemexpress LLC 1,2-dibromoethane-d4 | 22581-63-1 | MFCD00037499 | 99.0% | 191.89 g/mol | BrCD2CD2Br | 5 G
1,2-Dibromoethane-d4 is the deuterated isotopologue of 1,2-dibromoethane in which four hydrogen atoms are replaced by deuterium. It is supplied as a small-quantity reagent for analytical and synthetic applications where isotopic labeling is required, such as NMR solvents, internal standards, tracer studies, and mechanistic investigations.
- Deuterium-labeled (d4) isotopologue for isotopic tracing.
- Suitable as an internal standard for NMR and mass spectrometry.
- Useful in mechanistic and synthetic studies requiring isotopic enrichment.
- Provided in small laboratory-scale packaging for research use.
- Chemical formula BrCD2CD2Br and CAS number 22581-63-1 for unambiguous identification.
Sigma Aldrich Fine Chemicals Biosciences Methyl-d3-magnesium iodide solution 1.0 M in diethyl ether, 99 atom % D | 41251-37-0 | MFCD00001027 | 100ML
Methyl-d3-magnesium iodide solution 1.0 M in diethyl ether, 99 atom % D | Mol Wt: 169.26 | 41251-37-0 | MFCD00001027 | 100ML
Cayman Chemical ClofIbrIc AcId-d4 1mg
An internal standard for the quantification of clofibric acid by GC- or LC-MS
Cambridge Isotope Laboratories 21-DEOXYCORTISOL (2,2,4,6,6,21,21,21-D8, 97%), 0.01 G
21-DEOXYCORTISOL (2,2,4,6,6,21,21,21-D8, 97%), 0.01 G
Medchemexpress LLC Propylparaben-d4 | 1219802-67-1 | 184.23 | 1 MG
Propylparaben-d4 is the deuterium-labeled version of Propylparaben. Propylparaben, also known as Propyl parahydroxybenzoate, is a naturally occurring antimicrobial preservative found in plants and bacteria. It is widely used in various products, including cosmetics, pharmaceuticals, and foods.
- Deuterium labeled: This compound is enriched with deuterium, making it suitable for specific research applications.
- Antimicrobial preservative: Its unlabeled counterpart acts as an antimicrobial preservative.
- Research applications: Can be used as a tracer and as an internal standard for quantitative analysis methods like NMR, GC-MS, or LC-MS.
- Impact on biological systems: Studies indicate that Propylparaben can disrupt antral follicle growth and steroidogenic function by altering cell-cycle, apoptosis, and steroidogenesis pathways. It has also been shown to decrease sperm count and motility in rats.
Cambridge Isotope Laboratories 1,2-DIBROMOETHANE (1,2-13C2, 99%) AIR FREIGHT FORBIDDEN, 1 G, 33458-49-0
1,2-DIBROMOETHANE (1,2-13C2, 99%) AIR FREIGHT FORBIDDEN, 1 G, 33458-49-0
Cambridge Isotope Laboratories Atrazine (ring-13C3 99%) 100 ug/mL in MTBE 1 2 mL
Atrazine (ring-13C3 99%) 100 ug/mL in MTBE 1 2 mL