Fenetylline Sulfate
The sulfate salt of fenetylline (INN), a synthetic central nervous system stimulant alkaloid combining theophylline and amphetamine structures. HTS 2939.51.00.00 explicitly covers this compound and all its salts as per tariff heading.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +12.5% | 12.5% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +12.5% | 12.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing ergoline alkaloids
Different alkaloid groups have distinct subheadings in 2939.
If imported as research chemical mixture
Mixtures not meeting chapter note purity classified as chemical preparations.
If personal effects or samples
Personal use imports may qualify for duty-free entry under Chapter 98.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• File with U.S
• Customs under controlled substance provisions 30 days prior
• Include spectroscopic data (NMR, MS) proving identity as fenetylline salt
• Watch for chapter exclusions - pure compounds only, not formulations
Related Products under HTS 2939.51.00.00
Fenetylline Hydrochloride
Fenetylline hydrochloride is the salt form of fenetylline, a synthetic stimulant alkaloid structurally related to amphetamine and theophylline. It falls under HTS 2939.51.00.00 as a chemically defined derivative of theophylline classified specifically among alkaloids and their salts.
Fenetylline Phosphate
Fenetylline phosphate represents the phosphoric acid salt of fenetylline, used in pharmaceutical research as a theophylline-aminophylline derivative. Classified under HTS 2939.51.00.00 per chapter notes covering salts of specifically named alkaloids.
Fenetylline Mesylate
Fenetylline mesylate is the methanesulfonic acid salt form, valued for improved solubility in pharmaceutical applications. It qualifies under HTS 2939.51.00.00 as chapter notes include all salts of named alkaloids.
Fenetylline Citrate
Citric acid salt of fenetylline, providing pharmaceutical grade stability for research purposes. Covered by HTS 2939.51.00.00 as salts of the specifically named INN fenetylline per alkaloid heading.