2930.90.92.51/Methyl 3-Mercaptopropionate/Japan

Methyl 3-Mercaptopropionate from Japan

Methyl 3-mercaptopropionate is an organo-thiol ester used in polymer synthesis and flavor chemistry. HTS 2930.90.92.51 classification as other organo-sulfur compound with primary thiol functionality. Intermediate for methionine production.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Refractive index testing confirms identity (1.456-1.458)

• Pungent odor requires sealed secondary containment for customs inspection

• Methionine production declaration may trigger agricultural import review