Lansoprazole

Also known as: Prevacid, Ogast, Takepron, Zoton, Lanzor, Lancid, Promp, Lanz, Ulpax, Agopton, Lansox, Limpidex, Bamalite, Blason, Dakar, Ilsatec, Lanproton, Monolitum, Pro Ulco, Prosogan

Lansoprazole (CAS 103577-45-3) 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 369.362 g/mol. Key properties include a melting point of 178-182°C dec., 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. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 103577-45-3
Jingsj CID: J-44395-8
Molecular Formula: C₁₆H₁₄F₃N₃O₂S
Molecular Weight: 369.362 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	178-182°C dec.
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

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

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]. Lai, K.C., et al., Lansoprazole for the prevention of recurrences of ulcer complications from long-term low-dose aspirin use. N Engl J Med, 2002. 346(26): p. 2033-8. [3]. Iwahi, T., et al., Lansoprazole, a novel benzimidazole proton pump inhibitor, and its related compounds have selective activity against Helicobacter pylori. Antimicrob Agents Chemother, 1991. 35(3): p. 490-6.

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]. Lai, K.C., et al., Lansoprazole for the prevention of recurrences of ulcer complications from long-term low-dose aspirin use. N Engl J Med, 2002. 346(26): p. 2033-8. [3]. Iwahi, T., et al., Lansoprazole, a novel benzimidazole proton pump inhibitor, and its related compounds have selective activity against Helicobacter pylori. Antimicrob Agents Chemother, 1991. 35(3): p. 490-6.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Lansoprazole?

The CAS number of Lansoprazole is 103577-45-3.

What are the molecular formula and molecular weight of Lansoprazole?

Lansoprazole has molecular formula C16H14F3N3O2S and molecular weight 369.362 g/mol.

Is Lansoprazole hazardous?

Lansoprazole has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Lansoprazole?

For Lansoprazole, Upstream Products: 2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]thio]-1H-benzimidazole, Lansoprazole Sulfide N-Oxide, Diethyl D-tartrate; Downstream Products: Dexlansoprazole, (S)-Lansoprazole.

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. "Lansoprazole (CAS 103577-45-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44395-8 (accessed 2026-11-09).

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