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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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2

MMAE-d8, MedChemExpress

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

ENCOMPASS 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
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.
Technique Cancer-programmed Cell Death
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
3

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
4

(±)-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
5

Nitazoxanide-d4, MedChemExpress

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

ENCOMPASS
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
6

Hydroxy Itraconazole-d8, MedChemExpress

MedChemExpress Hydroxy Itraconazole D8 is the deuterium labeled Hydroxy Itraconazole. Hydroxy Itraconazole is an active metabolite of Itraconazole (ITZ), which is a triazole antifungal agent.

ENCOMPASS ENCOMPASS_PREFERRED
Percent Purity 98.0%
Molecular Weight (g/mol) 729.68
Color White
Physical Form Powder
Chemical Name or Material Hydroxy Itraconazole-d8
Grade Research
SMILES O=C1N(C(C([2H])([2H])[2H])([2H])C(O)([2H])C([2H])([2H])[2H])N=CN1C2=CC=C(N3CCN(C4=CC=C(OCC5OC(CN6N=CN=C6)(C7=CC=C(Cl)C=C7Cl)OC5)C=C4)CC3)C=C2
Synonym R-63373-d8
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 C35H30D8Cl2N8O5
Formula Weight 729.68
7

Netupitant-d6, MedChemExpress

MedChemExpress Netupitant D6 is the deuterium labeled Netupitant (CID-6451149), which is a highly potent and selective, orally active neurokinin-1 (NK1) receptor antagonist.

ENCOMPASS_PREFERRED
8

Quetiapine-d4 fumarate, MedChemExpress

MedChemExpress Quetiapine D4 fumarate is the deuterium labeled Quetiapine fumarate. Quetiapine fumarate is a 5-HT receptors agonist and a dopamine receptor antagonist. Antidepressant and anxiolytic effects.

ENCOMPASS_PREFERRED
9

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
10

Candesartan-d4, MedChemExpress

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

ENCOMPASS 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
11

Nepafenac-d5, MedChemExpress

MedChemExpress Nepafenac D5 (AHR-9434 D5) is the deuterium labeled Nepafenac, which is a selective COX-2 inhibitor.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 259.31
Color Yellow
Physical Form Solid
Chemical Name or Material Nepafenac-d5
Grade Research
SMILES O=C(C1=C([2H])C([2H])=C([2H])C([2H])=C1[2H])C2=CC=CC(CC(N)=O)=C2N
Percent Purity 98.0%
CAS 1246814-53-8
Solubility Information DMSO : ≥ 100 mg/mL (385.64 mM)
Synonym AHR-9434-d5 AL-6515-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 C15H9D5N2O2
Formula Weight 259.31
12

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
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.
Technique Cancer-programmed Cell Death
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
13

MMAF-d8 hydrochloride, MedChemExpress

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

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 776.47
Color Off-White
Physical Form Solid
Chemical Name or Material MMAF-d8 hydrochloride
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(O)=O)CC2=CC=CC=C2)=O)OC)=O)OC)N(C([C@@](C([2H])(C([2H])([2H])[2H])C([2H])([2H])[2H])([2H])NC([C@H](C(C)C)NC)=O)=O)C.Cl
Percent Purity 98.97%
Solubility Information DMSO : 100 mg/mL (128.79 mM; Need ultrasonic)
Purity Grade Notes Research
Recommended Storage 4°C, sealed storage, away from moisture∣The compound is unstable in solutions, freshly prepared is recommended.
Technique Cancer-programmed Cell Death
Shelf Life 4°C, sealed storage, away from moisture∣The compound is unstable in solutions, freshly prepared is recommended.
Molecular Formula C39H58D8ClN5O8
Formula Weight 776.47
14

Banoxantrone-d12 dihydrochloride, MedChemExpress

MedChemExpress Banoxantrone-d12 (AQ4N-d12) dihydrochloride is the deuterium labeled Banoxantrone dihydrochloride. Banoxantrone is a novel bioreductive agent that can be reduced to a stable, DNA-affinic compound AQ4, which is a potent topoisomerase II inhibitor.

ENCOMPASS_PREFERRED
Molecular Weight (g/mol) 529.48
Color Blue
Physical Form Solid
Chemical Name or Material Banoxantrone-d12 dihydrochloride
Grade Research
SMILES O=N(C([2H])([2H])[2H])(C([2H])([2H])[2H])CCNC1=CC=C(NCCN(C([2H])([2H])[2H])(C([2H])([2H])[2H])=O)C(C(C2=C(O)C=CC(O)=C23)=O)=C1C3=O.Cl.Cl
Percent Purity 98.02%
CAS 1562066-98-1
Synonym AQ4N-d12 dihydrochloride
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)
Technique Cancer-programmed Cell Death
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 C22H18D12Cl2N4O6
Formula Weight 529.48
15

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