2920.90.20.00/p-Nitrophenyl Phosphate/Japan

p-Nitrophenyl Phosphate from Japan

p-Nitrophenyl phosphate (pNPP) is a chromogenic substrate for alkaline phosphatase enzyme assays in biotechnology. Classified under HTS 2920.90.2000 as nitrated derivative of aromatic phosphoric acid ester. Yellow color results from nitro substitution on phenyl ring.

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

• Biotech reagents require cold chain if disodium salt hydrate form; specify storage conditions

• Include intended laboratory use certification to avoid pharmaceutical classification