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Isotope Standards

Isotope Standards

Compounds (solids, liquids, gasses) with well-defined isotopic compositions that act as the ultimate sources of accuracy in mass spectrometric measurements of isotope ratios.
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1 – 15 of 46 results
4

MMAE-d8, MedChemExpress

MedChemExpress MMAE-d8 (Monomethyl auristatin E-d8) is a deuterated labeled MMAE, a potent mitotic inhibitor and a tubulin inhibitor.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 726.03
Color White
Physical Form Solid
Chemical Name or Material MMAE-d8
Grade Research
SMILES CC[C@H](C)[C@@H]([C@@H](CC(N1[C@@H](CCC1)[C@@H]([C@@H](C)C(N[C@H](C)[C@@H](O)C2=CC=CC=C2)=O)OC)=O)OC)N(C([C@@](C(C([2H])([2H])[2H])(C([2H])([2H])[2H])[2H])([2H])NC([C@H](C(C)C)NC)=O)=O)C
For Use With (Application) Cancer-programmed cell death
Percent Purity 98.43%
CAS 2070009-72-0
Solubility Information DMSO : 100 mg/mL (137.74 mM; Need ultrasonic)
Synonym Monomethyl auristatin E-d8 Deuterated labeled MMAE
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣The compound is unstable in solutions, freshly prepared is recommended.
Shelf Life Powder -20°C 3 years, 4°C 2 years∣The compound is unstable in solutions, freshly prepared is recommended.
Molecular Formula C39H59D8N5O7
Formula Weight 726.03
5

Etoricoxib-d4, MedChemExpress

MedChemExpress Etoricoxib D4 (MK-0663 D4) is a deuterium labeled Etoricoxib. Etoricoxib is a non steroidal anti-inflammatory agent, acting as a selective and orally active COX-2 inhibitor, with IC50s of 1.1 μM and 116 μM for COX-2 and COX-1 in human whole blood.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 362.87
Color Light Nude
Physical Form Powder
Chemical Name or Material Etoricoxib-d4
Grade Research
SMILES ClC(C=N1)=CC(C2=C([2H])C([2H])=C(S(C)(=O)=O)C([2H])=C2[2H])=C1C3=CN=C(C)C=C3
Percent Purity 99.35%
CAS 1131345-14-6
Synonym MK-0663-d4 L-791456-d4
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Shelf Life Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Molecular Formula C18H11D4ClN2O2S
Formula Weight 362.87
6

Praziquantel D11, MedChemExpress

MedChemExpress Praziquantel D11 is the deuterium labeled Praziquantel, which is an anthelmintic.

ENCOMPASS_PREFERRED
CAS 1246343-36-1
Molecular Weight (g/mol) 323.47
Chemical Name or Material Praziquantel D11
Grade Research
SMILES O=C1N2CCC3=C(C=CC=C3)C2CN(C(C4([2H])C([2H])([2H])C([2H])([2H])C([2H])([2H])C([2H])([2H])C4([2H])[2H])=O)C1
Purity Grade Notes Research
Recommended Storage Please store the product under the recommended conditions in the Certificate of Analysis.
Shelf Life Please store the product under the recommended conditions in the Certificate of Analysis.
For Use With (Application) COVID-19-immunoregulation
Molecular Formula C19H13D11N2O2
Formula Weight 323.47
7

Candesartan-d4, MedChemExpress

MedChemExpress Candesartan D4 (CV-11974 D4) is the deuterium labeled Candesartan, which is an angiotensin II receptor antagonist.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 444.48
Color White
Physical Form Solid
Chemical Name or Material Candesartan-d4
Grade Research
SMILES [2H]C1=C(CN2C(C(C(O)=O)=CC=C3)=C3N=C2OCC)C([2H])=C([2H])C(C4=CC=CC=C4C5=NNN=N5)=C1[2H]
Percent Purity 98.85%
CAS 1346604-70-3
Synonym CV-11974-d4
Purity Grade Notes Research
Recommended Storage 4°C, sealed storage, away from moisture∣In solvent : -80°C, 6 months∣-20°C, 1 month (sealed storage, away from moisture)
Shelf Life 4°C, sealed storage, away from moisture∣In solvent : -80°C, 6 months∣-20°C, 1 month (sealed storage, away from moisture)
Molecular Formula C24H16D4N6O3
Formula Weight 444.48
8

Sofosbuvir-d6, MedChemExpress

MedChemExpress Sofosbuvir D6 (PSI-7977 D6) is the deuterium labeled Sofosbuvir. Sofosbuvir (PSI-7977) is an active inhibitor of HCV RNA replication in the HCV replicon assay, demonstrates potent anti-hepatitis C virus (HCV) activity.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 535.49
Color White
Physical Form Solid
Chemical Name or Material Sofosbuvir-d6
Grade Research
SMILES O=C1N([C@H]2[C@]([C@H](O)[C@@H](CO[P@](OC3=CC=CC=C3)(N[C@@H](C)C(OC(C([2H])([2H])[2H])C([2H])([2H])[2H])=O)=O)O2)(C)F)C=CC(N1)=O
Percent Purity 95.0%
CAS 1868135-06-1
Synonym PSI-7977-d6 GS-7977-d6
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Shelf Life Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Molecular Formula C22H23D6FN3O9P
Formula Weight 535.49
9

Azilsartan-d5, MedChemExpress

MedChemExpress Azilsartan D5 (TAK-536 D5) is the deuterium labeled Azilsartan(TAK-536), which is a specific and potent angiotensin II type 1 receptor antagonist.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 461.48
Color White
Physical Form Solid
Chemical Name or Material Azilsartan-d5
Grade Research
SMILES OC(C1=CC=CC2=C1N(C(OC(C([2H])([2H])[2H])([2H])[2H])=N2)CC(C=C3)=CC=C3C4=CC=CC=C4C5=NC(ON5)=O)=O
Percent Purity 98.0%
CAS 1346599-45-8
Synonym TAK-536-d5
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Shelf Life Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Molecular Formula C25H15D5N4O5
Formula Weight 461.48
10

(±)-Levomepromazine-d6, MedChemExpress

MedChemExpress (±)-Levomepromazine D6 ((±)-Methotrimeprazine D6) is the deuterium labeled Methotrimeprazine, which is a D3 dopamine and Histamine H1 receptor antagonist.

ENCOMPASS_PREFERRED
11

MMAD-d8, MedChemExpress

MedChemExpress D8-MMAD is a deuterated form of MMAD, which is a microtubule disrupting agent.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 779.11
Color Off-White
Physical Form Solid
Chemical Name or Material MMAD-d8
Grade Research
SMILES O=C(N[C@H](C1=NC=CS1)CC2=CC=CC=C2)[C@H](C)[C@@H](OC)[C@H]3N(C(C[C@@H](OC)[C@H]([C@@H](C)CC)N(C([C@@](C([2H])(C([2H])([2H])[2H])C([2H])([2H])[2H])([2H])NC([C@H](C(C)C)NC)=O)=O)C)=O)CCC3
For Use With (Application) Cancer-programmed cell death
Percent Purity 99.12%
Solubility Information DMSO : ≥ 100 mg/mL (128.35 mM)
Synonym Demethyldolastatin 10-d8 Monomethylauristatin D-d8 Monomethyl Dolastatin 10-d8
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣The compound is unstable in solutions, freshly prepared is recommended.
Shelf Life Powder -20°C 3 years, 4°C 2 years∣The compound is unstable in solutions, freshly prepared is recommended.
Molecular Formula C41H58D8N6O6S
Formula Weight 779.11
12

Eldecalcitol-d6, MedChemExpress

MedChemExpress Eldecalcitol-d6 is the deuterium labeled Eldecalcitol. Eldecalcitol is an orally active analogue of active vitamin D used in the treatment of osteoporosis.

ENCOMPASS_PREFERRED
13

Fexofenadine-d6, MedChemExpress

MedChemExpress Fexofenadine D6 (MDL-16455 D6) is deuterium labeled is Fexofenadine, which is an antihistamine pharmaceutical agent.

ENCOMPASS_PREFERRED ENCOMPASS
Molecular Weight (g/mol) 507.69
Color White
Physical Form Powder
Chemical Name or Material Fexofenadine-d6
Grade Research
SMILES OC(C1=CC=CC=C1)(C2=CC=CC=C2)C3CCN(CCCC(C4=CC=C(C(C(O)=O)(C([2H])([2H])[2H])C([2H])([2H])[2H])C=C4)O)CC3
For Use With (Application) Neuroscience-Neuromodulation
Percent Purity 98.0%
CAS 548783-71-7
Synonym MDL-16455-d6 Terfenadine carboxylate-d6
Purity Grade Notes Research
Recommended Storage Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Shelf Life Powder -20°C 3 years, 4°C 2 years∣In solvent -80°C 6 months, -20°C 1 month
Molecular Formula C32H33D6NO4
Formula Weight 507.69
14

Enalaprilat-d5 sodium, MedChemExpress

MedChemExpress Enalaprilat (MK-422) D5 Sodium Salt is the deuterium labeled Enalaprilat(MK-422), which is an angiotensin-converting enzyme (ACE) inhibitor.

ENCOMPASS_PREFERRED
15

Doxercalciferol-d3, MedChemExpress

MedChemExpress Doxercalciferol-D3 is the deuterated form of Doxercalciferol, which is a Vitamin D2 analog that acts as a vitamin D receptor activator (VDRA).

ENCOMPASS_PREFERRED
Percent Purity 96.39%
Molecular Weight (g/mol) 415.67
Color White
Physical Form Solid
Chemical Name or Material Doxercalciferol-d3
Grade Research
SMILES O[C@@H](C[C@H](O)C1)C(/C1=C([2H])\C=C2[C@@]3([H])[C@@](CCC\2)(C)[C@@H]([C@H](C)/C=C/[C@H](C)C(C)C)CC3)=C([2H])\[2H]
Purity Grade Notes Research
Recommended Storage -20°C, protect from light, stored under nitrogen∣The compound is unstable in solutions, freshly prepared is recommended.
Shelf Life -20°C, protect from light, stored under nitrogen∣The compound is unstable in solutions, freshly prepared is recommended.
Molecular Formula C28H41D3O2
Formula Weight 415.67