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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

Mycophenolic acid-d3, MedChemExpress

MedChemExpress Mycophenolic acid D3 (Mycophenolate D3) is deuterium labeled Mycophenolic acid, which is an an immunosuppresant drug and has potent anti-proliferative activity.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 323.36
Color White
Physical Form Solid
Chemical Name or Material Mycophenolic acid-d3
Grade Research
SMILES O=C(OC1)C2=C1C(C)=C(OC([2H])([2H])[2H])C(C/C=C(C)/CCC(O)=O)=C2O
Percent Purity 98.0%
CAS 1185242-90-3
Synonym Mycophenolate-d3
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 C17H17D3O6
Formula Weight 323.36
5

Calcitriol-d6, MedChemExpress

MedChemExpress Calcitriol-d6 is the deuterium labeled Calcitriol. Calcitriol is the active metabolite of vitamin D3 that activates the vitamin D receptor (VDR).

ENCOMPASS_PREFERRED
6

PSI-6206 13C,d3, MedChemExpress

MedChemExpress PSI-6206 13CD3 is the deuterium labeled PSI-6206. PSI-6206 is the deaminated derivative of PSI-6130, which is a potent and selective inhibitor of HCV NS5B polymerase. PSI-6206 low potently inhibits HCV replicon with EC90 of >100 μM.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 264.23
Color Light Yellow
Physical Form Solid
Chemical Name or Material PSI-6206 13C,d3
Grade Research
SMILES OC[C@@H]1[C@H]([C@@]([13C]([2H])([2H])[2H])(F)[C@H](N2C(NC(C=C2)=O)=O)O1)O
Percent Purity 98.0%
CAS 1256490-42-2
Synonym RO-2433 13C,d3 GS-331007 13C,d3 Sofosbuvir metabolite GS-331007 13C,d3
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 C9 13CH10D3FN2O5
Formula Weight 264.23
7

Omeprazole-d3, MedChemExpress

MedChemExpress Omeprazole-d3 (H 16868-d3) is deuterium labeled Omeprazole. Omeprazole, a proton pump inhibitor (PPI), is available for treatment of acid-related gastrointestinal disorders. Omeprazole shows competitive inhibition of CYP2C19 activity with a Ki of 2 to 6 μM. Omeprazole also inhibits growth of Gram-positive and Gram-negative bacteria.

ENCOMPASS_PREFERRED
8

Nitazoxanide-d4, MedChemExpress

MedChemExpress Nitazoxanide D4 (NTZ D4) is the deuterium labeled Nitazoxanide, which is an antiprotozoal agent.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 311.31
Color Off-White
Physical Form Solid
Chemical Name or Material Nitazoxanide-d4
Grade Research
SMILES O=C(NC1=NC=C([N+]([O-])=O)S1)C2=C(OC(C)=O)C([2H])=C([2H])C([2H])=C2[2H]
Percent Purity 98.0%
CAS 1246819-17-9
Synonym NTZ-d4 NSC-697855-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 C12H5D4N3O5S
Formula Weight 311.31
9

Pyridostigmine-d6 bromide, MedChemExpress

MedChemExpress Pyridostigmine D6 bromide is the deuterium labeled Pyridostigmine, which is a parasympathomimetic and a reversible cholinesterase inhibitor.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 267.15
Color White
Physical Form Solid
Chemical Name or Material Pyridostigmine-d6 bromide
Grade Research
SMILES O=C(N(C([2H])([2H])[2H])C([2H])([2H])[2H])OC1=CC=C[N+](C)=C1.[Br-]
Percent Purity 98.0%
CAS 2375858-08-3
Solubility Information DMSO : 50 mg/mL (187.16 mM; Need ultrasonic)
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 C9H7D6BrN2O2
Formula Weight 267.15
10

Midodrine D6 hydrochloride, MedChemExpress

MedChemExpress Midodrine D6 hydrochloride is deuterium labeled Midodrine, which is a vasopressor/antihypotensive agent.

ENCOMPASS_PREFERRED
11

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
12

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
13

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
14

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
15

1alpha, 25-Dihydroxy VD2-d6, MedChemExpress

MedChemExpress 1alpha, 25-Dihydroxy VD2-D6 is a deuterated form of vitamin D.

ENCOMPASS ENCOMPASS_PREFERRED
CAS 216244-04-1
Molecular Weight (g/mol) 434.68
Chemical Name or Material 1alpha, 25-Dihydroxy VD2-d6
Grade Research
SMILES O[C@H](C/1=C)C[C@H](O)CC1=C\C=C2[C@@](CC[C@@H]3[C@@H](/C=C/[C@H](C)C(C([2H])([2H])[2H])(C([2H])([2H])[2H])O)C)([H])[C@]3(C)CCC\2
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) Metabolism-sugar/lipid metabolism
Molecular Formula C28H38D6O3
Formula Weight 434.68