Import Diosmin — Buy in wholesale FOB from Supplier in China

Diosmin is a flavonoid compound with the CAS number 520-27-4 and molecular formula C28H32O15, supplied as a pale yellow powder crystal with a melting point of 283 °C. The product is specified at 99% purity according to CP standard, with solubility characteristics showing actual insolubility in water and ethanol. It is chemically identified as 4H-1-Benzopyran-4-one, 7-[(6-O-deoxy-α-L-mannopyranosyl)-β-D-glucopyranosyl)oxy]-5-hydroxy-2-(3-hydroxy-4-methoxyphenyl)-, consistent with its natural occurrence in citrus and buckwheat extracts.

This compound is typically used in pharmaceutical and nutraceutical applications due to its venotonic and capillary-stabilizing properties. It demonstrates a vitamin P-like effect by reducing capillary permeability in animal models, comparable to rutin and quercetin, and exhibits a vitamin C2-like action by enhancing capillary resistance in guinea pigs while reducing adrenal ascorbate excretion. Its anti-inflammatory profile supports use in vascular health formulations, and the material is handled under dry, inert conditions due to its hygroscopic nature and thermal sensitivity.

Buyers include pharmaceutical manufacturers, supplement formulators, and research labs sourcing active ingredients for venous insufficiency treatments. Packaging is customized per buyer requirements, typically in sealed polyethylene-lined drums or aluminum foil pouches to prevent moisture exposure. Trade terms are negotiable, with standard shipments via sea freight from Shanghai or Ningbo ports. Lead time is confirmed upon order, and documentation includes COA and SDS upon request.

Wuhan Eighteen International Trade Co., Ltd is a trading company based in Wuhan, Hubei Province, with a physical address in the Nanguo Xiongchu Square commercial district. The company operates as an exporter of fine chemicals and pharmaceutical intermediates, with no public disclosure of manufacturing capacity or laboratory facilities. Its trust tier is listed as harbor, indicating basic compliance with platform verification protocols, but no third-party certifications or production audits are referenced in the listing.

The supplier has no recorded response rate or average response time, suggesting limited or no active communication channels with buyers. It does not claim ownership of production, nor does it reference any client names, export volume, or years in operation. Buyers should treat this as a sourcing intermediary and request direct documentation for each shipment, including batch-specific COA and customs documentation.