Omeprazole
Also known as: 5-Methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole, 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole, 6-Methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole, (RS)-5-Methoxy-2-(4-methoxy-3,5-dimethyl-2-pyridylmethylsulphinyl)benzimidazole, (±)-Omeprazole, Losec, Prilosec, Mepral, Antra, Gastrogard, Omepral, Omeprazen, Pepticum, Zoltum, Miol, Elgam, Zimor, Audazol, Aulcer, Belmazol
Omeprazole (CAS 73590-58-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C17H19N3O3S and a molecular weight of 345.416 g/mol. Key properties include a melting point of 156ºC, a boiling point of 600.0±60.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 316.7±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.
- 73590-58-6
- Jingsj CID
- J-25365-6
- Molecular Formula
- C17H19N3O3S
- Molecular Weight
- 345.416 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 156ºC |
|---|---|
| Boiling Point | 600.0±60.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 316.7±32.9 °C |
| Exact Mass | 345.114716 |
| PSA | 96.31000 |
| LogP | 2.17 |
| Vapor Pressure | 0.0±1.7 mmHg at 25°C |
| Refractive Index | 1.669 |
| Additional Property | H2O: 0.5 mg/mL |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Walt, R.P., et al., Effect of daily oral omeprazole on 24 hour intragastric acidity. Br Med J (Clin Res Ed), 1983. 287(6384): p. 12-4. [2]. Howden, C.W., et al., Oral pharmacokinetics of omeprazole. Eur J Clin Pharmacol, 1984. 26(5): p. 641-3. |
|---|
Frequently Asked Questions
What is the CAS number of Omeprazole?
The CAS number of Omeprazole is 73590-58-6.
What are the molecular formula and molecular weight of Omeprazole?
Omeprazole has molecular formula C17H19N3O3S and molecular weight 345.416 g/mol.
Is Omeprazole hazardous?
Omeprazole 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 Omeprazole?
For Omeprazole, Upstream Products: Ufiprazole, 4-methoxy-2,3,5-trimethylpyridine, Diethyl D-tartrate; Downstream Products: 4-methoxy-2,3,5-trimethylpyridine, 5-Methoxy-2-mercaptobenzimidazole, Tetracycline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Omeprazole (CAS 73590-58-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25365-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.