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.

1 – 15 of 32 results

Lead 206 Isotope Standard For ICP/MS, SPEX CertiPrep™

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Lead 207 Isotope Standard for ICP/MS, SPEX CertiPrep™

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(±)-Levomepromazine-d6, MedChemExpress

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

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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.

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Specifications

Percent Purity	95.0%
CAS	1868135-06-1
Molecular Weight (g/mol)	535.49
Molecular Formula	C₂₂H₂₃D₆FN₃O₉P

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.

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Specifications

Percent Purity	98.0%
CAS	1346599-45-8
Molecular Weight (g/mol)	461.48
Molecular Formula	C₂₅H₁₅D₅N₄O₅

MMAD-d8, MedChemExpress

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

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Specifications

Percent Purity	99.12%
Molecular Weight (g/mol)	779.11
Molecular Formula	C₄₁H₅₈D₈N₆O₆S

Nepafenac-d5, MedChemExpress

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

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Specifications

Percent Purity	98.0%
CAS	1246814-53-8
Molecular Weight (g/mol)	259.31
Molecular Formula	C₁₅H₉D₅N₂O₂

Proguanil-d6, MedChemExpress

MedChemExpress Proguanil D6 is the deuterium labeled Proguanil, which is a prophylactic antimalarial drug.

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Paricalcitol-d6, MedChemExpress

MedChemExpress Paricalcitol-d6 is the deuterium labeled Paricalcitol. Paricalcitol is a drug used for the prevention and treatment of secondary hyperparathyroidism (excessive secretion of parathyroid hormone) associated with chronic renal failure.

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Specifications

Percent Purity	99.64%
CAS	2070009-67-3
Molecular Weight (g/mol)	422.67
Molecular Formula	C₂₇H₃₈D₆O₃

Alfacalcidol-d6, MedChemExpress

MedChemExpress Alfacalcidol-d6 is the deuterium labeled Alfacalcidol. Alfacalcidol is a non-selective VDR activator.

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Specifications

Percent Purity	98.0%
CAS	1641940-94-4
Molecular Weight (g/mol)	406.67
Molecular Formula	C₂₇H₃₈D₆O₂

Maxacalcitol-d6, MedChemExpress

MedChemExpress Maxacalcitol-D6 is the deuterated form of Maxacalcitol (22-Oxacalcitriol), which is a non-calcemic vitamin D3 analog and VDR ligand of VDR-like receptors.

Pricing and Availability
Specifications

Percent Purity	96.8%
Molecular Weight (g/mol)	424.65
Molecular Formula	C₂₆H₃₆D₆O₄

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.

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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.