Isotopically Labeled Compounds
Medchemexpress LLC 17beta-dihydroequilin-2,4,16,16-d4 | 350819-99-7 | MFCD01074213 | 99.0% | 272.37 g·mol-1 | C18H16D4O2 | 5 MG
β-Dihydroequilin-d4 is the deuterium-labeled isotopologue of β-dihydroequilin intended for use as an analytical standard and internal standard in mass spectrometry and quantitative research. Supplied as a solid high-purity isotopic reference (CAS 350819-99-7), it supports assay development, isotopic tracing, and accurate quantification in laboratory workflows.
- High isotopic enrichment for accurate mass spectrometry quantification.
- Purity reported at approximately 99.0% for analytical use.
- Supplied as a solid for convenient handling and long-term storage.
- Suitable as an internal standard in LC-MS/MS and GC-MS assays.
- Supports isotopic tracing and quantitative method development.
Medchemexpress LLC Irbesartan-d4 (SR-47436-d4) | 1216883-23-6 | 99.5% | 1 MG
Irbesartan-d4 (SR-47436-d4) | 1216883-23-6 | 99.5% | 1 MG
American Radiolabeled Chemicals Inc GLY 1,3-14C 250UC
Glycerol-1,3-14C 250uCi in sterile water, 0.5 mCi/ml, 40 mCi/mmol, M.W. 92.1, Exclusive
American Radiolabeled Chemicals Inc TUBERCIDINE 3H 250UC
Tubercidin-8-3H 250uCi in ethanol:water (1:1), 1 mCi/ml, S.A. 10-20 Ci/mmol, M.W. 266.25
Medchemexpress LLC Benzamide-15N | 31656-62-9 | MFCD00084200 | 99.9% | 10mg
Benzamide-15N is a 15N-labeled Benzamide Benzamide inhibits poly(ADP-ribose) polymerase (PARP)[1][2]
Cayman Chemical FluvoxamIn-d4maleate 500ug
An internal standard for the quantification of fluvoxamine by GC- or LC-MS
Cambridge Isotope Laboratories D-GLUCOSE (1,2-13C2, 99%), 0.5 G, 138079-87-5
D-GLUCOSE (1,2-13C2, 99%), 0.5 G, 138079-87-5
Cambridge Isotope Laboratories L-TYROSINE (13C9, 97-99%; D7, 97-99%; 15N, 97-99%), 0.25 G
L-TYROSINE (13C9, 97-99%; D7, 97-99%; 15N, 97-99%), 0.25 G
Medchemexpress LLC N-Ethylmaleimide-d5 | 360768-37-2 | 99.9% | 5 MG
N-Ethylmaleimide-d5 is the deuterium labeled N-Ethylmaleimide. N-Ethylmaleimide (NEM) is a reagent that alkylates free sulfhydryl groups, a cysteine protease inhibitor, and specifically inhibits phosphate transport in mitochondria. It is also a deubiquitinating enzyme inhibitor.
- Deuterium labeled N-Ethylmaleimide.
- 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 Terazosin-d8 | 1006718-20-2 | 99.2% | 1 MG
Terazosin-d8 is a deuterium labeled version of Terazosin, a quinazoline derivative and a competitive, orally active α1-adrenoceptor antagonist. It functions by relaxing blood vessels and opening the bladder, showing potential for treating benign prostatic hyperplasia (BPH) and high blood pressure. Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.
- Used as a tracer
- Functions as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Competitive and orally active α1-adrenoceptor antagonist
- Relaxing blood vessels and opening the bladder
- Potential for benign prostatic hyperplasia (BPH) and high blood pressure treatment
Medchemexpress LLC Phenacetin-13C | 72156-72-0 | 99.9% | 100 MG
Phenacetin-13C is the 13C labeled Phenacetin. Phenacetin (Acetophenetidin) is a non-opioid analgesic/antipyretic agent and a selective COX-3 inhibitor. It is used as a probe of cytochrome P450 enzymes CYP1A2 in human liver microsomes and in rats.
- 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 are incorporated into drug molecules for quantitation during drug development
Medchemexpress LLC Propan-2-amine-d9 h 100mg
Propan-2-amine-d9 (hydrochloride) is the deuterium labeled Propan-2-amine hydrochloride[1]
Cambridge Isotope Laboratories ACETIC ANHYDRIDE (13C4, 99%; D6, 98%), 0.1 G
ACETIC ANHYDRIDE (13C4, 99%; D6, 98%), 0.1 G