Brazil NCM · 8-digit subitem

NCM 2933.53.40 – Phenobarbital and its salts

NCM 2933.53.40 (also written 29335340) is Brazil's code for phenobarbital and its salts. Its first 6 digits are HS code 2933.53.

Official description of NCM 2933.53.40

PortuguêsOfficial
Fenobarbital e seus sais
EnglishUnofficial translation

Phenobarbital and its salts

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 2933.53.40

29Chapter 33Heading 53Subheading

HS code 2933.53
Same in every country

4Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.33 Heterocyclic compounds with nitrogen hetero-atom(s) only Compostos heterocíclicos exclusivamente de heteroátomo(s) de nitrogênio (azoto).
  3. Group 2933.5 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Compostos cuja estrutura contém um ciclo pirimidina (hidrogenado ou não) ou piperazina:
  4. Subheading 2933.53 Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof Alobarbital (DCI), amobarbital (DCI), barbital (DCI), butalbital (DCI), butobarbital, ciclobarbital (DCI), fenobarbital (DCI), metilfenobarbital (DCI), pentobarbital (DCI), secbutabarbital (DCI), secobarbital (DCI) e vinilbital (DCI); sais destes produtos
  5. Subitem 2933.53.40 Phenobarbital and its salts Fenobarbital e seus sais

Other NCM codes under HS 2933.53

2933.53.11 Allobarbital and its saltsAlobarbital e seus sais 2933.53.12 Amobarbital and its saltsAmobarbital e seus sais 2933.53.21 Barbital and its saltsBarbital e seus sais 2933.53.22 Butalbital and its saltsButalbital e seus sais 2933.53.23 Butobarbital and its saltsButobarbital e seus sais 2933.53.30 Cyclobarbital and its saltsCiclobarbital e seus sais 2933.53.50 Methylphenobarbital and its saltsMetilfenobarbital e seus sais 2933.53.60 Pentobarbital and its saltsPentobarbital e seus sais 2933.53.71 Secbutabarbital and its saltsSecbutabarbital e seus sais 2933.53.72 Secobarbital and its saltsSecobarbital e seus sais 2933.53.80 Vinylbital and its saltsVenilbital e seus sais

Questions about NCM 2933.53.40

What is NCM 2933.53.40?

NCM 2933.53.40 (29335340) is the Brazilian (Mercosur) code for phenobarbital and its salts. Its official Portuguese description is “Fenobarbital e seus sais”.

What is the HS code for NCM 2933.53.40?

HS 2933.53 (Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 2933.53.40?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.