Brazil NCM · 4-digit heading

NCM 29.34 – Nucleic acids and other heterocyclic compounds

About NCM heading 29.34

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds

Heading 29.34 of Brazil's NCM has 70 eight-digit codes. Official Portuguese description: Ácidos nucleicos e seus sais, de constituição química definida ou não; outros compostos heterocíclicos.

The first four digits, 2934, identify this heading within chapter 29. Its six-digit subheadings follow the international HS system; the final two digits distinguish Mercosur's NCM classifications. Select a code below to read its English translation, official Portuguese text and full classification path.

For product coverage and classification context, read the HS heading 29.34 guide.

NCM codes in heading 29.34 70

  1. 2934.10 Heterocyclic compounds; containing an unfused thiazole ring (whether or not hydrogenated) in the structureCompostos cuja estrutura contém um ciclo tiazol (hidrogenado ou não) não condensado HS code
  2. 2934.10.10 FentiazacFentiazac
  3. 2934.10.20 Thiazolidine hydrochlorideCloridrato de tiazolidina
  4. 2934.10.30 ThiabendazoleTiabendazol
  5. 2934.10.90 Other unfused thiazole ring compoundsOutros
  6. 2934.20 Heterocyclic compounds; containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fusedCompostos cuja estrutura contém ciclos benzotiazol (hidrogenados ou não) sem outras condensações HS code
  7. 2934.20.10 2-Mercaptobenzothiazole and its salts2-Mercaptobenzotiazol e seus sais
  8. 2934.20.20 Benzothiazyl disulphide (MBTS)2,2'-Ditio-bis(benzotiazol) (dissulfeto de benzotiazila)
  9. 2934.20.3 Benzothiazole sulphenamides Benzotiazol sulfenamidas
  10. 2934.20.31 N-tert-Butylbenzothiazole sulphenamide (TBBS)2-(Terbutilaminotio)benzotiazol (N-terbutil-benzotiazol-sulfenamida)
  11. 2934.20.32 N-Cyclohexylbenzothiazole sulphenamide (CBS)2-(Cicloexilaminotio)benzotiazol (N-cicloexil-benzotiazol-sulfenamida)
  12. 2934.20.33 N,N-Dicyclohexylbenzothiazole sulphenamide2-(Dicicloexilaminotio)benzotiazol (N,N-dicicloexil-benzotiazol-sulfenamida)
  13. 2934.20.34 N-Oxydiethylenebenzothiazole sulphenamide (MBS)2-(4-Morfoliniltio)benzotiazol (N-oxidietileno-benzotiazol-sulfenamida)
  14. 2934.20.39 Other benzothiazole sulphenamidesOutras
  15. 2934.20.40 2-(Thiocyanomethylthio)benzothiazole (TCMTB)2-(Tiocianometiltio)benzotiazol (TCMTB)
  16. 2934.20.90 Other benzothiazole ring compoundsOutros
  17. 2934.30 Heterocyclic compounds; containing in the structure, a phenothiazine ring-system (whether or not hydrogenated), not further fusedCompostos cuja estrutura contém ciclos fenotiazina (hidrogenados ou não) sem outras condensações HS code
  18. 2934.30.10 Levomepromazine (methotrimeprazine) maleateMaleato de metotrimeprazina (maleato de levomepromazina)
  19. 2934.30.20 Fluphenazine enanthateEnantato de flufenazina
  20. 2934.30.30 PromethazinePrometazina
  21. 2934.30.90 Other phenothiazine ring compoundsOutros
  22. 2934.9 Other: Outros:
  23. 2934.91 Heterocyclic compounds; other heterocyclic compounds, n.e.c. in 2934.1, 2934.2 and 2934.3Aminorex (DCI), brotizolam (DCI), clotiazepam (DCI), cloxazolam (DCI), dextromoramida (DCI), fendimetrazina (DCI), fenmetrazina (DCI), haloxazolam (DCI), ketazolam (DCI), mesocarbo (DCI), oxazolam (DCI), pemolina (DCI) e sufentanila (DCI); sais destes produtos HS code
  24. 2934.91.1 Aminorex and brotizolam; salts thereof Aminorex e brotizolan; sais destes produtos
  25. 2934.91.11 Aminorex and its saltsAminorex e seus sais
  26. 2934.91.12 Brotizolam and its saltsBrotizolam e seus sais
  27. 2934.91.2 Clotiazepam, cloxazolam and dextromoramide; salts thereof Clotiazepam, cloxazolam e dextromoramida; sais destes produtos
  28. 2934.91.21 ClotiazepamClotiazepam
  29. 2934.91.22 CloxazolamCloxazolam
  30. 2934.91.23 DextromoramideDextromoramida
  31. 2934.91.29 Salts of clotiazepam, cloxazolam, dextromoramideOutros
  32. 2934.91.3 Phendimetrazine, phenmetrazine and haloxazolam; salts thereof Fendimetrazina, fenmetrazina e haloxazolam; sais destes produtos
  33. 2934.91.31 Phendimetrazine and its saltsFendimetrazina e seus sais
  34. 2934.91.32 Phenmetrazine and its saltsFenmetrazina e seus sais
  35. 2934.91.33 Haloxazolam and its saltsHaloxazolam e seus sais
  36. 2934.91.4 Ketazolam and mesocarb; salts thereof Ketazolam e mesocarbo; sais destes produtos
  37. 2934.91.41 KetazolamKetazolam
  38. 2934.91.42 MesocarbMesocarbo
  39. 2934.91.49 Salts of ketazolam and mesocarbOutros
  40. 2934.91.50 Oxazolam and its saltsOxazolam e seus sais
  41. 2934.91.60 Pemoline and its saltsPemolina e seus sais
  42. 2934.91.70 Sufentanil and its saltsSufentanila e seus sais
  43. 2934.92.00 Other fentanyls and their derivativesOutras fentanilas e seus derivados
  44. 2934.99 Nucleic acids and their salts, other heterocyclic compounds, n.e.c. in heading number 2934Outros HS code
  45. 2934.99.1 Containing an oxazine ring (whether or not hydrogenated) in the structure, other than those containing sulphur hetero-atom(s) Cuja estrutura contém um ciclo oxazina (hidrogenado ou não), exceto os que contenham heteroátomo(s) de enxofre
  46. 2934.99.11 Morpholine and its saltsMorfolina e seus sais
  47. 2934.99.12 Pirenoxine sodium (catalin sodium)Pirenoxina sódica (catalino sódico)
  48. 2934.99.13 NimorazoleNimorazol
  49. 2934.99.14 Isatoic anhydrideAnidrido isatoico (2H-3,1-benzoxazina-2,4-(1H)-diona)
  50. 2934.99.15 4,4'-Dithiodimorpholine4,4'-Ditiodimorfolina
  51. 2934.99.19 Other oxazine ring compounds without sulphurOutros
  52. 2934.99.2 Containing in the structure exclusively 3 nitrogen and oxygen hetero-atoms together, other than nucleic acids and their salts and products of item 2934.99.1 Cuja estrutura contém exclusivamente 3 heteroátomos de nitrogênio (azoto) e oxigênio em conjunto, exceto os ácidos nucleicos e seus sais e os produtos compreendidos no item 2934.99.1
  53. 2934.99.22 Zidovudine (AZT)Zidovudina (AZT)
  54. 2934.99.23 ThymidineTimidina
  55. 2934.99.24 FurazolidoneFurazolidona
  56. 2934.99.25 CytarabineCitarabina
  57. 2934.99.26 OxadiazonOxadiazona
  58. 2934.99.27 StavudineEstavudina
  59. 2934.99.29 Other heterocyclics with 3 N/O hetero-atoms onlyOutros
  60. 2934.99.3 Other, containing in the structure exclusively nitrogen and oxygen hetero-atoms Outros, cuja estrutura contém exclusivamente heteroátomos de nitrogênio (azoto) e oxigênio
  61. 2934.99.31 KetoconazoleCetoconazol
  62. 2934.99.32 Prazosin hydrochlorideCloridrato de prazosina
  63. 2934.99.33 TalniflumateTalniflumato
  64. 2934.99.34 Nucleic acids and their saltsÁcidos nucleicos e seus sais
  65. 2934.99.35 PropiconazolePropiconazol
  66. 2934.99.39 Other heterocyclics with N and O hetero-atoms onlyOutros
  67. 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)
  68. 2934.99.41 ThiopheneTiofeno
  69. 2934.99.42 6-Aminopenicillanic acidÁcido 6-aminopenicilânico
  70. 2934.99.43 7-Aminocephalosporanic acidÁcido 7-aminocefalosporânico
  71. 2934.99.44 7-Aminodesacetoxycephalosporanic acid (7-ADCA)Ácido 7-aminodesacetoxicefalosporânico
  72. 2934.99.45 ChlormezanoneClormezanona
  73. 2934.99.46 9-(N-Methyl-4-piperidinylidene)thioxanthene9-(N-Metil-4-piperidinilideno)tioxanteno
  74. 2934.99.49 Other heterocyclics, only up to 2 S or 1 S + 1 NOutros
  75. 2934.99.5 Containing in the structure exclusively 3 sulphur and nitrogen hetero-atoms together Cuja estrutura contém exclusivamente 3 heteroátomos de enxofre e nitrogênio (azoto) em conjunto
  76. 2934.99.51 TebuthiuronTebutiuron
  77. 2934.99.52 TetramisoleTetramisol
  78. 2934.99.53 Levamisole and its saltsLevamisol e seus sais
  79. 2934.99.54 TioconazoleTioconazol
  80. 2934.99.59 Other heterocyclics with 3 S/N hetero-atoms onlyOutros
  81. 2934.99.6 Other, containing in the structure exclusively sulphur or sulphur and nitrogen hetero-atoms Outros, cuja estrutura contém exclusivamente heteroátomos de enxofre ou de enxofre e nitrogênio (azoto)
  82. 2934.99.61 Tizanidine hydrochlorideCloridrato de tizanidina
  83. 2934.99.69 Other heterocyclics, only S or S+N hetero-atomsOutros
  84. 2934.99.9 Other Outros
  85. 2934.99.91 TimololTimolol
  86. 2934.99.92 Timolol hydrogen maleateMaleato ácido de timolol
  87. 2934.99.93 LamivudineLamivudina
  88. 2934.99.99 Other heterocyclic compounds, not elsewhere listedOutros

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.