Brazil NCM · 8-digit subitem

NCM 2934.99.46 – 9-(N-Methyl-4-piperidinylidene)thioxanthene

NCM 2934.99.46 (also written 29349946) is Brazil's code for 9-(N-Methyl-4-piperidinylidene)thioxanthene. Its first 6 digits are HS code 2934.99.

Official description of NCM 2934.99.46

PortuguêsOfficial
9-(N-Metil-4-piperidinilideno)tioxanteno
EnglishUnofficial translation

9-(N-Methyl-4-piperidinylidene)thioxanthene

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

How to read NCM 2934.99.46

29Chapter 34Heading 99Subheading

HS code 2934.99
Same in every country

4Item 6Subitem

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 29.34 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds Ácidos nucleicos e seus sais, de constituição química definida ou não; outros compostos heterocíclicos.
  3. Group 2934.9 Other: Outros:
  4. Subheading 2934.99 Nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934 Outros
  5. Item 2934.99.4 Containing in the structure exclusively up to 2 sulphur hetero-atoms or one sulphur and one nitrogen hetero-atom Cuja estrutura contém exclusivamente até 2 heteroátomos de enxofre ou um de enxofre e um de nitrogênio (azoto)
  6. Subitem 2934.99.46 9-(N-Methyl-4-piperidinylidene)thioxanthene 9-(N-Metil-4-piperidinilideno)tioxanteno

Other NCM codes under HS 2934.99

2934.99.11 Morpholine and its saltsMorfolina e seus sais 2934.99.12 Pirenoxine sodium (catalin sodium)Pirenoxina sódica (catalino sódico) 2934.99.13 NimorazoleNimorazol 2934.99.14 Isatoic anhydrideAnidrido isatoico (2H-3,1-benzoxazina-2,4-(1H)-diona) 2934.99.15 4,4'-Dithiodimorpholine4,4'-Ditiodimorfolina 2934.99.19 Other oxazine ring compounds without sulphurOutros 2934.99.22 Zidovudine (AZT)Zidovudina (AZT) 2934.99.23 ThymidineTimidina 2934.99.24 FurazolidoneFurazolidona 2934.99.25 CytarabineCitarabina 2934.99.26 OxadiazonOxadiazona 2934.99.27 StavudineEstavudina 2934.99.29 Other heterocyclics with 3 N/O hetero-atoms onlyOutros 2934.99.31 KetoconazoleCetoconazol 2934.99.32 Prazosin hydrochlorideCloridrato de prazosina 2934.99.33 TalniflumateTalniflumato 2934.99.34 Nucleic acids and their saltsÁcidos nucleicos e seus sais 2934.99.35 PropiconazolePropiconazol 2934.99.39 Other heterocyclics with N and O hetero-atoms onlyOutros 2934.99.41 ThiopheneTiofeno 2934.99.42 6-Aminopenicillanic acidÁcido 6-aminopenicilânico 2934.99.43 7-Aminocephalosporanic acidÁcido 7-aminocefalosporânico 2934.99.44 7-Aminodesacetoxycephalosporanic acid (7-ADCA)Ácido 7-aminodesacetoxicefalosporânico 2934.99.45 ChlormezanoneClormezanona 2934.99.49 Other heterocyclics, only up to 2 S or 1 S + 1 NOutros 2934.99.51 TebuthiuronTebutiuron 2934.99.52 TetramisoleTetramisol 2934.99.53 Levamisole and its saltsLevamisol e seus sais 2934.99.54 TioconazoleTioconazol 2934.99.59 Other heterocyclics with 3 S/N hetero-atoms onlyOutros 2934.99.61 Tizanidine hydrochlorideCloridrato de tizanidina 2934.99.69 Other heterocyclics, only S or S+N hetero-atomsOutros 2934.99.91 TimololTimolol 2934.99.92 Timolol hydrogen maleateMaleato ácido de timolol 2934.99.93 LamivudineLamivudina 2934.99.99 Other heterocyclic compounds, not elsewhere listedOutros

Questions about NCM 2934.99.46

What is NCM 2934.99.46?

NCM 2934.99.46 (29349946) is the Brazilian (Mercosur) code for 9-(N-Methyl-4-piperidinylidene)thioxanthene. Its official Portuguese description is “9-(N-Metil-4-piperidinilideno)tioxanteno”.

What is the HS code for NCM 2934.99.46?

HS 2934.99 (Nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934). 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 2934.99.46?

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.