Pentoxyverine citrate

• CAT Number: A000529
• CAS Number: 23142-01-0
• Molecular Formula: C26H39NO10
• Molecular Weight: 525.59
• Purity: ≥95%
• Synonyms: 2-[2-(diethylamino)ethoxy]ethyl 1-phenylcyclopentane-1-carboxylate;2-hydroxypropane-1,2,3-tricarboxylic acid
• InChI: InChI=1S/C20H31NO3.C6H8O7/c1-3-21(4-2)14-15-23-16-17-24-19(22)20(12-8-9-13-20)18-10-6-5-7-11-18;7-3(8)1-6(13,5(11)12)2-4(9)10/h5-7,10-11H,3-4,8-9,12-17H2,1-2H3;13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
• InChIKey: AKJDEXBCRLOVTH-UHFFFAOYSA-N
• SMILES: CCN(CC)CCOCCOC(=O)C1(CCCC1)C2=CC=CC=C2.C(C(=O)O)C(CC(=O)O)(C(=O)O)O

Pentoxyverine (Carbetapentane) citrate is an orally active sigma-1 receptor agonist, with Kis of 41 nM, 894 nM and 75 nM for σ1, σ2 and guinea-pig brain membrane σ1, respectively. Pentoxyverine citrate is a muscarinic antagonist. Pentoxyverine citrate is a potent antitussive, anticonvulsant, and spasmolytic agent. Pentoxyverine citrate can be used for inhibiting bronchial interceptor, weakening of cough reflex, bronchial smooth muscle relaxation and reduction of airway resistance[1][2][3][4].
Pentoxyverine (Carbetapentane; 1-32 mg/kg; SC) citrate dose-dependently potentiates the sensitizing effect of capsaicin to the mechanical stimulus when the mice were stimulated in the paw injected with Capsaicin (HY-10448)[4].
Pentoxyverine (16 mg/kg; SC) citrate shows strong potentiation of Capsaicin-induced secondary mechanical allodynia[4].
Pentoxyverine (50 mg/kg; orally; ) citrate, used for positive control, increases the percentage of the aqueous ammonia-induced latent period of cough by 121.72%, inhibits cough frequency by 45.45% after administration for 7 days in mice of either sex (22-25 g)[5].

Reference

[1]. Calderon SN, et, al. Novel 1-phenylcycloalkanecarboxylic acid derivatives are potent and selective sigma 1 ligands. J Med Chem. 1994 Jul 22;37(15):2285-91.
 [Content Brief]

[2]. Brown C, et, al. Antitussive activity of sigma-1 receptor agonists in the guinea-pig. Br J Pharmacol. 2004 Jan;141(2):233-40.
 [Content Brief]

[3]. Mohamed SH, et, al. Extraction-free spectrophotometric assay of the antitussive drug pentoxyverine citrate using sulfonephthalein dyes. Spectrochim Acta A Mol Biomol Spectrosc. 2019 Nov 5;222:117186.
 [Content Brief]

[4]. J M Entrena, et al. Sigma-1 Receptor Agonism Promotes Mechanical Allodynia After Priming the Nociceptive System with Capsaicin. Sci Rep. 2016 Nov 25:6:37835. doi: 10.1038/srep37835.
 [Content Brief]

[5]. Yuebin Ge, et al. In Vivo Evaluation of the Antiasthmatic, Antitussive, and Expectorant Activities and Chemical Components of Three Elaeagnus Leaves. Evid Based Complement Alternat Med. 2015:2015:428208.
 [Content Brief]