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Olopatadine Carbaldehyde Hydrochloride

  • CAT Number DCTI-C-1267
  • CAS Number NA
  • Molecular Formula CC20H22ClNO2 (HCl Salt) C20H21NO2 (Free Base)
  • Molecular Weight 343.85 (HCl Salt) 307.39 (Free Base)
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Olopatadine E-isomer Hydrochloride

  • CAT Number DCTI-C-1265
  • CAS Number 949141-22-4
  • Molecular Formula C21H24ClNO3 (HCl salt) C21H23NO3 (Free Base)
  • Molecular Weight 373.88 (HCl salt) 337.42 (Free Base)
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Olopatadine related compound C

  • CAT Number DCTI-C-1403
  • CAS Number 55453-87-7
  • Molecular Formula C16H12O4
  • Molecular Weight 268.26
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α-Hydroxy Olopatadine Hydrochloride

  • CAT Number DCTI-C-1266
  • CAS Number 1628639-06-4 (free base)
  • Molecular Formula C21H24ClNO4 (HCl Salt) C21H23NO4 (Free Base)
  • Molecular Weight 389.87 (HCl Salt) 353.41 (Free Base)

General Information

Olopatadine Impurities and Olopatadine 

Daicel Pharma synthesizes high-quality Olopatadine impurities, Olopatadine Carbaldehyde Hydrochloride, Olopatadine E-isomer Hydrochloride, Olopatadine related compound C, and α-Hydroxy Olopatadine Hydrochloride, which are crucial in the analysis of the quality, stability, and biological safety of the active pharmaceutical ingredient Olopatadine. Moreover, Daicel Pharma offers custom synthesis of Olopatadine impurities and delivers them globally.

Olopatadine [CAS: 113806-05-6] is a medicine that has dual functions as a histamine H1 receptor antagonist and a mast cell stabilizer, which helps to alleviate allergies. It is an antiallergic agent, a dibenzoxipine derivative for treating allergic rhinitis, urticaria, and bronchial asthma.

Olopatadine: Use and Commercial Availability  

Olopatadine is available as an ophthalmic solution for treating ocular signs and allergic conjunctivitis. The drug is marketed under brand names, including Opatanol, Pataday, Patanase, and Ryaltris.

Olopatadine Structure and Mechanism of Action Olopatadine Structure and Mechanism of Action

The chemical name of Olopatadine is (11Z)-11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-acetic acid. Its chemical formula is C21H23NO3, and its molecular weight is approximately 337.4 g/mol.

Olopatadine inhibits mast cell mediator release and possesses histamine H1 receptor antagonist activity. With the blockage of receptors, histamine has no effect, so there is a decrease in allergy symptoms.

Olopatadine Impurities and Synthesis

The impurities in Olopatadine arise from the drug’s synthetic process, degradation, and storage conditions. These impurities can affect the drug’s quality, safety, and efficacy and therefore need close monitoring and control during drug manufacturing1 and storage.

Daicel offers a Certificate of Analysis (CoA) from a cGMP-compliant analytical facility for Olopatadine impurity standards, Olopatadine Carbaldehyde Hydrochloride, Olopatadine E-isomer Hydrochloride, Olopatadine related compound C, and α-Hydroxy Olopatadine Hydrochloride. The CoA includes complete characterization data, such as 1H NMR, 13C NMR, IR, MASS, and HPLC purity2,3. We also provide 13C-DEPT and CHN on request. We give a complete characterization report on delivery. Daicel has the technology and expertise to prepare any unknown Olopatadine impurity or degradation product.


Frequently Asked Questions

Impurities in Olopatadine arise from the starting materials, reagents, or by-products. They can also form during storage or due to degradation.

Methods such as LC-MS and HPLC help detect related substances in Olopatadine.

Impurities in Olopatadine pose risks to patients with toxicity, decreased effectiveness, or adverse reactions to the drug.

Many methods reduce or eliminate Olopatadine impurities, like optimization of the synthetic process, good quality raw materials and reagents, controlling reaction conditions, and minimizing exposure to environmental factors. In addition, effective purification techniques and analytical methods, such as HPLC or LC-MS, help detect impurities and ensure the drug meets regulatory standards.

Olopatadine impurities are stored at a controlled room temperature between 2-8 ⁰C or as indicated on the Certificate of Analysis (CoA).

Note: Products protected by valid patents by a manufacturer are not offered for sale in countries having patent protection. The sale of such products constitutes a patent infringement, and its liability is at the buyer's risk.

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