Esomeprazole

Esomeprazole

Product Name Esomeprazole
CAS Number 119141-88-7
Molecular Formula C17H19N3O3S
Molecular Weight 345.42
Appearance White to off-white crystalline powder
Assay (HPLC) ≥ 99.0%
Loss on Drying ≤ 0.5%
Residue on Ignition ≤ 0.1%
Heavy Metals ≤ 10 ppm
Melting Point 155°C - 160°C
Specific Rotation −150° to −160° (c=1, methanol)

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Esomeprazole Structure

Synonyms

Esomeprazole, Nexium, Esomeprazole base, (S)-Omeprazole, Esomeprazole anhydrous, Esomeprazole EP, Esomeprazole USP, (S)-5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole

Esomeprazole is the S-isomer of omeprazole, and it’s the one that actually does the heavy lifting when it comes to acid suppression. It’s the active ingredient in Nexium, one of the best-selling proton pump inhibitors in the world. By selectively inhibiting the H+/K+-ATPase enzyme system in gastric parietal cells, it blocks acid secretion at the final step — which means it works faster and lasts longer than many other PPIs. For manufacturers, that translates into a reliable, well-documented API for treating GERD, peptic ulcers, and H. pylori eradication regimens. We supply esomeprazole as a high-purity crystalline powder, every batch shipped with a full COA, flexible from 1 kg trial runs to bulk container orders, and ready for worldwide delivery.

 

Source & Purity

  • High purity: ≥ 99.0% (HPLC), meeting EP/USP standards.
  • Stable quality: Consistent batch-to-batch profile with strict impurity control.
  • Custom packaging: Available from 1 kg to 500 kg, with flexible lead times.

Documentation & Supply

  • Documentation: COA, MSDS, TDS
  • Lead time: In stock for standard sizes, 7-10 days for bulk orders.
  • Packaging: Double polyethylene bags inside fiber drums, or as per request.

Request For Quote

  • Our Address: 280 Main Street, Xian, Shaanxi, China
  • LyvBio Co., Ltd. — Email: info@lyvbio.com

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