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3-Sulfopropanoic acid

Catalog No. TN7246 CAS 44826-45-1

Synonyms: 3-SPA

3-Sulfopropanoic acid, a major metabolite of treprostinil and its prodrug ALZ-801, is an endogenous molecule present in the cerebrospinal fluid (CSF) of AD patients that inhibits the formation of Aβ42 oligomers.

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3-Sulfopropanoic acid Chemical Structure

3-Sulfopropanoic acid, CAS 44826-45-1

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5 mg	In stock	$ 36.00
10 mg	In stock	$ 48.00
25 mg	In stock	$ 77.00
50 mg	In stock	$ 108.00
100 mg	In stock	$ 148.00

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In vivo

3-Sulfopropanoic acid (3-SPA) is an endogenous molecule in the human brain and is present in the cerebrospinal fluid (CSF) of patients with AD and other neurodegenerative brain diseases. Lumbar CSF samples from 64 drug-naïve patients with cognitive deficits (Mini-Mental State Examination [MMSE] score range 15-30) and six patients with AD treated with tramiprosate 150 mg twice daily in the phase III trial, at week 78, were analyzed. We used liquid chromatography-tandem mass spectrometry to confirm the structural molecular identity of endogenous 3-SPA with a 3-SPA reference standard and ion-mobility spectrometry-mass spectrometry with molecular dynamics to characterize interactions of 3-SPA with Aβ42 monomers, and the resultant conformational alterations. Rat studies using oral (30 mg/kg) and intravenous (10 mg/kg) doses were conducted to characterize the pharmacokinetic properties and brain penetration of 3-SPA. We confirmed the presence of 3-SPA in the CSF of drug-naïve patients with cognitive deficits (mean concentration 11.7 ± 4.3 nM). The mean concentration of 3-SPA in patients with AD treated with tramiprosate was 135 ± 51 nM. In vitro studies revealed a multi-ligand interaction of 3-SPA with monomeric Aβ42 that inhibits the aggregation of Aβ42 into small oligomers. Comparisons of the molecular interactions of tramiprosate and 3-SPA with Aβ42 are also presented. Furthermore, in rat preclinical studies, 3-SPA displayed 100% oral bioavailability and 25% brain penetration, indicating that the metabolite is well absorbed and crosses the blood-brain barrier.[1]

Synonyms	3-SPA
Molecular Weight	154.14
Formula	C3H6O5S
CAS No.	44826-45-1

Storage

Powder: -20°C for 3 years | In solvent: -80°C for 1 year

References and Literature

1. Hey JA, et al. Discovery and Identification of an Endogenous Metabolite of Tramiprosate and Its Prodrug ALZ-801 that Inhibits Beta Amyloid Oligomer Formation in the Human Brain. CNS Drugs. 2018 Sep;32(9):849-861.

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Keywords

3-Sulfopropanoic acid 44826-45-1 Metabolism Drug Metabolite 3-SPA inhibitor inhibit

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