Isotopically Labeled Compounds
Medchemexpress LLC Calcifediol-d6 (25-hydroxy vitamin D3-d6) | 78782-98-6 | MFCD00870231 | 99.1% | 406.67 | C27H38D6O2 | 5 MG
Calcifediol-d6 is the deuterium-labeled analogue of calcifediol (25-hydroxy vitamin D3), a major circulating metabolite and potent vitamin D receptor (VDR) ligand. The isotopically labeled compound is provided as a high-purity analytical standard for quantitative mass spectrometry, tracer studies, and related research applications.
- Deuterated internal standard for LC-MS/MS quantification.
- High purity suitable for analytical use (>99%).
- Molecular formula C27H38D6O2; molecular weight 406.67.
- Supplied as a solid for solution preparation and storage.
- Suitable for pharmacokinetic, metabolic, and receptor-binding studies.
Medchemexpress LLC Equilin 3-sulfate-d4 (sodium) | 285979-81-9 | 95.0% | 375.4 g/mol | C18H16D4NaO5S | 5 MG
Equilin 3-Sulfate-d4 (sodium) is the deuterium-labeled sodium salt of equilin 3-sulfate supplied for analytical and research use. It is intended as a stable-isotope internal standard or tracer for quantitative mass spectrometry and NMR applications. The material is typically provided as a solid and should be stored sealed at -20 °C; in solvent it is stable at -80 °C for up to 6 months or -20 °C for 1 month.
![Medchemexpress LLC Benzo[e]pyrene-d12 | 205440-82-0 | MFCD00143670 | 98.0% | 264.38 g/mol | C20D12 | 5 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000262268.png-250.jpg)
Medchemexpress LLC Benzo[e]pyrene-d12 | 205440-82-0 | MFCD00143670 | 98.0% | 264.38 g/mol | C20D12 | 5 MG
Benzo[e]pyrene-d12 is the deuterium-labeled isotopologue of benzo[e]pyrene used as an internal standard and tracer in analytical chemistry. It provides a mass-shifted reference for accurate quantitation and method development by mass spectrometry.
- Isotopically labeled (D12) for clear mass separation.
- Molecular formula C20D12; molecular weight 264.38 g/mol.
- CAS number 205440-82-0.
- 98.0% chemical purity and 98 atom % deuterium enrichment.
- Supplied in small milligram quantities for analytical use.
- Suitable as an internal standard for quantitative mass spectrometry workflows.
American Radiolabeled Chemicals Inc A-MSH NDP 125I 10UC
a-MSH, Nle4, D-Phe7-125I 10uCi in buffered solution (pH 8.5), 0.075 mCi/ml, S.A. 2200 Ci/mmol, M.W. ~1770, Shipped in Dry Ice
American Radiolabeled Chemicals Inc RTI-22-125I 250UC
RTI-55-125I 250uCi in ethanol:water:acetonitrile (1:1:0.1), 1 mCi/ml, S.A. 2200 Ci/mmol, M.W. 385.2
American Radiolabeled Chemicals Inc SUAVAGINE 125I 50UC
Sauvagine, Tyr0-125I 50uCi in buffered solution, 0.08 mCi/ml, S.A. 2200 Ci/mmol, M.W. 4778
American Radiolabeled Chemicals Inc V1A ANTA 125I 50UC
Vasopressin (linear), V1A antagonist (Phenylacetyl1-0-Me-D-Tyr2) Arg6-125I 50uCi in buffered solution (pH 4.2), 0.05 mCi/ml, S.A. 2200 Ci/mmol, M.W. 1274
American Radiolabeled Chemicals Inc WIN 55212-2 3H 250UC
WIN 55,212-2-5,7-naphthyl-3H 250uCi in ethanol, 1 mCi/ml, S.A. 40-60 Ci/mmol, M.W. 426, Shipped in Dry Ice
American Radiolabeled Chemicals Inc CGP 12177 3H 250UC
(-)-CGP 12177-5,7-3H 250uCi in ethanol, 1 mCi/ ml, S.A. 30-60 Ci/mmol, M.W. 279.80, Shipped in Dry Ice
American Radiolabeled Chemicals Inc AH5183 3H 250UC
AH5183, L-piperidinyl-3,4-3H 250uCi in ethanol, 1 mCi/ml, S.A. 30-60 Ci/mmol, M.W. 259.39, Shipped in Dry Ice
Selleck Chemical LLC Nicotinamide-d4 E8043-1MG
Nicotinamide-d4 is the deuterium labeled Nicotinamide Nicotinamide is a form of vitamin B3 that plays essential roles in cell physiology through facilitating NAD redox homeostasis and providing NAD as a substrate to a class of enzymes that catalyze non-redox reactions Nicotinamide is an inhibitor of SIRT1
![Revvity Health Sciences Inc Diltiazem, cis-(+)-[N-Methyl-<sup>3</sup>H]-, 1mCi (37MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502809328.jpg-250.jpg)
Revvity Health Sciences Inc Diltiazem, cis-(+)-[N-Methyl-3H]-, 1mCi (37MBq)
Diltiazem, cis-(+)-[N-Methyl-3H]-, 1mCi (37MBq)
![Revvity Health Sciences Inc DTG (1,3-Di-o-tolylguanidine, [p-ring-<sup>3</sup>H]-), [5-<sup>3</sup>H(N)]-, 250µCi (9.25MBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502809326.jpg-250.jpg)
Revvity Health Sciences Inc DTG (1,3-Di-o-tolylguanidine, [p-ring-3H]-), [5-3H(N)]-, 250µCi (9.25MBq)
DTG (1,3-Di-o-tolylguanidine, [p-ring-3H]-), [5-3H(N)]-, 250µCi (9.25MBq)
Medchemexpress LLC Isoquinoline-d7 | 17157-12-9 | 98.0% | 136.21 | 25 MG
Isoquinoline-d7 is the deuterium labeled Isoquinoline. Isoquinoline is an analog of pyridine. Isoquinoline structural-based alkaloids, such as tropoloisoquinoline, phthalideisoquinoline, and naphthylisoquinoline, have anti-cancer activities. It can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Used as a tracer.
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
American Radiolabeled Chemicals Inc IODOCYANOPIN 125I 100UC
Iodo-(-)-cyanopindolol-125I 100uCi in tris buffer, 0.1 mCi/ml, S.A. 2200 Ci/mmol, M.W. 411, Shipped in Dry Ice