Papaverine Sulfate Pharmaceutical Grade
Papaverine sulfate, a sulfuric acid salt of the natural opium alkaloid papaverine, serves as a non-narcotic peripheral vasodilator in medical treatments. This product is explicitly covered by HTS 2939.19.10.00 for papaverine and its salts, as a separate chemically defined organic compound. It is imported as high-purity powder for hospital pharmacy compounding.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇨🇦Canada | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for vegetable alkaloid salts other than opium
Non-opium alkaloids like caffeine salts use separate provisions; opium specificity keeps papaverine in 2939.19.
If contaminated with di-ammonium phosphate
Significant fertilizer impurities exclude from chapter 29 per exclusions; pure salts remain classified here.
If classified by amino-function rather than alkaloid
Chapter notes specify oxygen/nitrogen functions don't override alkaloid headings; 2939 takes precedence.
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Import Tips & Compliance
• Submit sulfate ion quantification in CoA; ensure <0.1% heavy metals per USP to meet pharma import standards
• Declare exact alkaloid content by HPLC; impurities >2% risk exclusion under chapter note (a) pure compound requirement
Related Products under HTS 2939.19.10.00
Papaverine Hydrobromide Powder
Papaverine hydrobromide is a bromide salt of the opium alkaloid papaverine, utilized in pharmaceutical manufacturing for its antispasmodic properties. Classified under HTS 2939.19.10.00 as a salt of papaverine per the alkaloid heading structure. It is typically imported as a bulk fine chemical for further processing into vascular smooth muscle relaxants.
Synthetic Papaverine Hydrochloride
Synthetic papaverine hydrochloride replicates the opium-derived alkaloid structure through total chemical synthesis, used identically in pharmaceuticals. Covered under HTS 2939.19.10.00 as 'alkaloids, natural or reproduced by synthesis, and their salts' per heading language. This enables import of non-plant-extracted material meeting identical purity specs.
Papaverine Base Pure Powder
Papaverine base, the free alkaloid without salt formation, extracted from opium or synthesized, used in research and as intermediate for salt production. HTS 2939.19.10.00 includes the parent alkaloid 'papaverine and its salts' explicitly. Supplied as analytical reference standard or bulk chemical.
Papaverine Hydrochloride USP
Papaverine hydrochloride is the salt form of papaverine, a benzylisoquinoline alkaloid derived from opium, used primarily as a smooth muscle relaxant in pharmaceutical applications. It falls under HTS 2939.19.10.00 as a salt of the opium alkaloid papaverine, consistent with chapter notes specifying alkaloids and their salts. This pure chemical compound is supplied as a white crystalline powder for compounding into injectables or oral medications.