General Information

Hydroxychloroquine Impurities and Hydroxychloroquine 

Daicel Pharma offers worldwide delivery options for a custom synthesis of Hydroxychloroquine impurities, including impurities such as Bis-Desethyl chloroquine, Chloroquine N-Oxide, Des ethyl chloroquine, Desethyl Hydroxychloroquine (DHCQ), more. These impurities help evaluate the purity and safety of an active pharmaceutical ingredient, Hydroxychloroquine.

Hydroxychloroquine [CAS: 118-42-3], an aminoquinoline compound, is a variant of chloroquine. It treats lupus erythematosus, rheumatoid arthritis, and light-sensitive skin eruptions, exhibiting properties similar to chloroquine as an antimalarial drug, targeting erythrocytic forms of malarial parasites. Alongside its antimalarial activity, Hydroxychloroquine acts as an antirheumatic agent. It possesses immunosuppressive properties and demonstrates anti-autophagy.

Hydroxychloroquine : Use and Commercial Availability 

Hydroxychloroquine targets the erythrocytic forms of malarial parasites. Its selective toxicity against the erythrocytic stages of plasmodial infection may be due to its concentration in parasitized erythrocytes. Moreover, as an antirheumatic agent, Hydroxychloroquine suppresses the immune system, causing a decrease in rheumatoid factor and acute phase reactants. It also exhibits an affinity for white blood cells, stabilizing lysosomal membranes and inhibiting enzymes involved in cartilage breakdown, including collagenase and proteases. Notably, Plaquenil is the brand name associated with formulations of this drug.

Hydroxychloroquine Structure and Mechanism of Action

The chemical name of Hydroxychloroquine is 2-[[4-[(7-Chloro-4-quinolinyl)amino]pentyl]ethylamino]ethanol. Its chemical formula is C₁₈H₂₆ClN₃O, and its molecular weight is approximately 335.9 g/mol.

Hydroxychloroquine’s mechanism of action is unknown.

Hydroxychloroquine Impurities and Synthesis

Hydroxychloroquine impurities can arise during the manufacturing process, storage, or degradation. The impurities may result from reaction side-products, incomplete reactions, or interactions with other substances. Analytical methods such as HPLC, LC-MS, NMR, and IR spectroscopy help analyze and quantify these impurities. Control measures include optimizing the synthetic process and purification steps and ensuring proper storage conditions to minimize impurity formation. Stability studies assess the impurity profile over time and establish appropriate expiration dates and storage recommendations. Compliance with regulatory guidelines, such as those provided by ICH, is essential to ensure the quality and safety of Hydroxychloroquine formulations. Effective control of impurities plays a vital role in maintaining the integrity of Hydroxychloroquine as a pharmaceutical product.

Daicel Pharma strictly adheres to cGMP standards and operates an analytical facility for synthesizing Hydroxychloroquine impurity standards such as Bis-Desethyl chloroquine, Chloroquine N-Oxide, Des ethyl chloroquine, Desethyl Hydroxychloroquine (DHCQ), and more. We offer deuterium-labeled Hydroxychloroquine standards, including Hydroxychloroquine-D5, essential for bioanalytical research and BA/BE studies. Our impurities have a detailed Certificate of Analysis (CoA) that provides a comprehensive characterization report. This report includes data obtained through techniques, 1H NMR, 13C NMR, IR, MASS, and HPLC purity analysis^1,2. Upon request, we give additional data like 13C-DEPT. We can synthesize unknown Hydroxychloroquine impurities or degradation products and labeled compounds. Each delivery has a comprehensive characterization report.