HS code reference

HS Code for Heterocyclic compounds: 2933.55

Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure; loprazolam (INN), mecloqualone (INN), methaqualone (INN), and zipeprol (INN); salts thereof

Start calculating

Review start

2933.55

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

Is 2933.55 always the HS code for Heterocyclic compounds?

Heterocyclic compounds can be reviewed from 2933.55, but the final code depends on full product details, material, use, and destination tariff rules.

How do I estimate US import cost with this code?

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

Is this a binding classification opinion?

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

Related HS code pages

2933.11