HS code reference

HS Code for Heterocyclic compounds: 2933.37

Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, N-phenethyl-4-piperdone (NPP)

Review start

2933.37

Use case

Pre-quote review

Next step

Calculate duty

Estimates are for planning only. Confirm final classification and rates with a licensed customs broker or the relevant customs authority.

Review Notes

Classification boundary

Review material, use, construction, and accessories

Quote workflow

Estimate first, then confirm with official tariff or broker

Heterocyclic compounds can be reviewed from 2933.37, but the final code depends on full product details, material, use, and destination tariff rules.

Use the tariff calculator with origin, customs value, freight, and insurance to estimate landed cost.

No. This page is for pre-quote planning and does not replace customs rulings, official tariff data, or licensed broker advice.

2933.11