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Wuhan Topule Biopharmaceutical Co., Ltd

Hongshan District, Wuhan City, Hubei Province

Contact person:Manager Ma

Phone number:18327326525(WhatsApp,Skype,WeChat)

Landline number:027-87215551




Basic information

cas: 73590-58-6

Chinese name: Omeprazole

Chinese alias: Losek; Sulfoxidazole; Losek; Sulfoxide mizole; Oak; Yanhuning;

English name: 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole

Molecular formula: C17H19N3O3S

Molecular weight: 345.41600

Accurate mass: 345.11500

PSA: 96.31000

LOGP: 3.76540

Physicochemical property

Appearance and properties: white crystalline solid

Density: 1.37g /cm3

Boiling point: 600ºC at 760 mmHg

Melting point: 156ºC

Flash point: 316.7ºC

Stable, but hygroscopic and photosensitive. Incompatible with strong oxidizing agents. Store in the dark. Stable, but hygroscopic and photosensitive. Incompatible with strong oxidizing agents. Store in the dark.

Storage condition: 2-8ºC

Safety information

Safety Description: S26-S36

Danger type code: R36/37/38

WGK Germany: 2

Production method and application

Production method

3, 5-dimethyl-2-hydroxymethyl-4-methoxypyridine is chlorinated to form 2-chloromethyl-3, 5-dimethyl-4-methoxypyridine. 4-methoxy1, 2-benzimidazole reacts with potassium xanthoate to form 2-mercapto-5-methoxybenzimidazole, which reacts with pyridine derivatives obtained above to form 2-[(3, 5-dimethyl-4-methoxy-2-pyridyl) methylthioyl] -5-methoxy-1h-benzimidazole, which is finally obtained in chloroform at 5℃ by oxidation with m-chloroperbenzoic acid Omeprazole. Crude omeprazole can be recrystallized with acetonitrile.


This product has a good effect on peptic gastric ulcer, with high efficiency and low toxicity, high cure rate, short cure time, good tolerance, patients easy to accept and other advantages. This product belongs to the proton pump inhibitor class, which can directly act on the acid pump, inhibit its secretion of stomach acid, and have a killing effect on HP.

Regardless of any difficulties you encounter during the ordering process, please feel free to contact our customer service at any time. We are dedicated to serving you!

We guarantee product quality and will sign a formal contract with you after placing an order. Before shipment, we will send you the latest atlas for confirmation. 

Only after confirming that there are no errors can we ship to you. 

We are a high-quality supplier of Chemicalbook.Unconditional refund for quality issues, ensuring you have no worries about shopping!