(S)-Lansoprazole

Also known as: (-)-Lansoprazole, Levolansoprazole, S-(-)-Lansoprazole, Lansoprazole S-Isomer, Lansoprazole Impurity 15, (S)-2-(((3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole, 2-[(S)-[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-benzimidazole

(S)-Lansoprazole (CAS 138530-95-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H14F3N3O2S and a molecular weight of 369.36 g/mol. Key properties include a boiling point of 555.8±60.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 289.9±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 138530-95-7
Jingsj CID: J-1983773-1
Molecular Formula: C₁₆H₁₄F₃N₃O₂S
Molecular Weight: 369.36 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	555.8±60.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	289.9±32.9 °C
Exact Mass	369.075867
PSA	87.08000
LogP	2.76
Vapor Pressure	0.0±1.5 mmHg at 25°C
Refractive Index	1.635

Activity & Biological Data

Additional Information	[1]. Kokufu, T., et al., Effects of lansoprazole on pharmacokinetics and metabolism of theophylline. Eur J Clin Pharmacol, 1995. 48(5): p. 391-5. [2]. Huarui Zhang, et al. Advances in the discovery of exosome inhibitors in cancer. J Enzyme Inhib Med Chem. 2020 Dec;35(1):1322-1330. [3]. Rupinder K Sodhi, et al. Defensive effect of lansoprazole in dementia of AD type in mice exposed to streptozotocin and cholesterol enriched diet. PLoS One. 2013 Jul 31;8(7):e70487. [4]. Jun Matsukawa, et al. A comparative study on the modes of action of TAK-438, a novel potassium-competitive acid blocker, and lansoprazole in primary cultured rabbit gastric glands. Biochem Pharmacol. 2011 May 1;81(9):1145-51. [5]. Erdinc Naseri, et al. Proton pump inhibitors omeprazole and lansoprazole induce relaxation of isolated human arteries. Eur J Pharmacol. 2006 Feb 15;531(1-3):226-31.

Additional Information

[1]. Kokufu, T., et al., Effects of lansoprazole on pharmacokinetics and metabolism of theophylline. Eur J Clin Pharmacol, 1995. 48(5): p. 391-5. [2]. Huarui Zhang, et al. Advances in the discovery of exosome inhibitors in cancer. J Enzyme Inhib Med Chem. 2020 Dec;35(1):1322-1330. [3]. Rupinder K Sodhi, et al. Defensive effect of lansoprazole in dementia of AD type in mice exposed to streptozotocin and cholesterol enriched diet. PLoS One. 2013 Jul 31;8(7):e70487. [4]. Jun Matsukawa, et al. A comparative study on the modes of action of TAK-438, a novel potassium-competitive acid blocker, and lansoprazole in primary cultured rabbit gastric glands. Biochem Pharmacol. 2011 May 1;81(9):1145-51. [5]. Erdinc Naseri, et al. Proton pump inhibitors omeprazole and lansoprazole induce relaxation of isolated human arteries. Eur J Pharmacol. 2006 Feb 15;531(1-3):226-31.

Frequently Asked Questions

What is the CAS number of (S)-Lansoprazole?

The CAS number of (S)-Lansoprazole is 138530-95-7.

What are the molecular formula and molecular weight of (S)-Lansoprazole?

(S)-Lansoprazole has molecular formula C16H14F3N3O2S and molecular weight 369.36 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "(S)-Lansoprazole (CAS 138530-95-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1983773-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.