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HS 2933 – Heterocyclic compounds with nitrogen hetero-atom(s) only.

Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026

Heterocyclic compounds with nitrogen hetero-atom(s) only.

Subheadings

Child tariff lines and MFN rates

HS codeDescriptionMFN rate
2933-11 – Phenazone (antipyrin) and its derivativesMFN Free
2933-11-00-00Phenazone (antipyrin) and its derivativesFree
2933-19 – OtherMFN Free
2933-19-00-00OtherFree
2933-21 – Hydantoin and its derivativesMFN Free
2933-21-00-00Hydantoin and its derivativesFree
2933-29 – OtherMFN Free
2933-29-00-00OtherFree
2933-31 – Pyridine and its saltsMFN Free
2933-31-00-00Pyridine and its saltsFree
2933-32 – Piperidine and its saltsMFN Free
2933-32-00-00Piperidine and its saltsFree
2933-33 – Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl (INN), ketobemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine (INN), pethidine (INN) intermediate A, phencyclidine (INN) (PCP), phenoperidine (INN), pipradrol (INN), piritramide (INN), propiram (INN), remifentanil (INN) and trimeperidine (INN); salts thereofMFN Free
2933-33-00-00Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl...Free
2933-34 – Other fentanyls and their derivativesMFN Free
2933-34-00-00Other fentanyls and their derivativesFree
2933-35 – 3-QuinuclidinolMFN Free
2933-35-00-003-QuinuclidinolFree
2933-36 – 4-Anilino-N-phenethylpiperidine (ANPP)MFN Free
2933-36-00-004-Anilino-N-phenethylpiperidine (ANPP)Free
2933-37 – N-Phenethyl-4-piperidone (NPP)MFN Free
2933-37-00-00N-Phenethyl-4-piperidone (NPP)Free
2933-39 – OtherMFN Free
2933-39-00-402933-39-00-40Free
2933-39-00-50Containing a pyridine ring and other rings with nitrogen hetero-atoms in the structureFree
2933-39-00-611-[N,N-Dialkyl (<=C10) -N-(n-(hydroxyl, cyano, acetoxy)alkyl (<=C10)) ammonio]-n-[N-(3-dimethylcarbamoxy-a-picolinyl)-N,N-dialkyl (<=C10) ammonio]decane dibr...Free
2933-39-00-621,n-Bis[N-(3-dimethylcarbamoxy-a-picolyl)-N,N-dialkyl (<=C10) ammonio]-alkane-(2,(n-1)-dione) dibromide (n=2-12)Free
2933-39-00-69Other:Free
2933-39-00-902933-39-00-90Free
2933-39-00-913-Quinuclidinyl benzilateFree
2933-39-00-99OtherFree
2933-41 – Levorphanol (INN) and its saltsMFN Free
2933-41-00-00Levorphanol (INN) and its saltsFree
2933-49 – OtherMFN Free
2933-49-00-00OtherFree
2933-52 – Malonylurea (barbituric acid) and its saltsMFN Free
2933-52-00-00Malonylurea (barbituric acid) and its saltsFree
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 thereofMFN Free
2933-53-00-00Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), p...Free
2933-54 – Other derivatives of malonylurea (barbituric acid); salts thereofMFN Free
2933-54-00-00Other derivatives of malonylurea (barbituric acid); salts thereofFree
2933-55 – Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereofMFN Free
2933-55-00-00Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereofFree
2933-59 – OtherMFN Free
2933-59-00-11AcyclovirFree
2933-59-00-19OtherFree
2933-59-00-20Containing a piperazine ringFree
2933-61 – MelamineMFN Free
2933-61-00-00MelamineFree
2933-69 – OtherMFN Free
2933-69-00-10Trichloroisocyanuric acidFree
2933-69-00-90OtherFree
2933-71 – 6-Hexanelactam (epsilon-caprolactam)MFN Free
2933-71-00-10For use in the manufacture of polycaprolactamFree
2933-71-00-90OtherFree
2933-72 – Clobazam (INN) and methyprylon (INN)MFN Free
2933-72-00-00Clobazam (INN) and methyprylon (INN)Free
2933-79 – Other lactamsMFN Free
2933-79-00-00Other lactamsFree
2933-91 – Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereofMFN Free
2933-91-00-00Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepa...Free
2933-92 – Azinphos-methyl (ISO)MFN Free
2933-92-00-00Azinphos-methyl (ISO)Free
2933-99 – OtherMFN Free
2933-99-00-10Amino-acids, for use in the manufacture of mixtures of amino-acids or of mixtures of amino-acids and protein hydrolysates (whether or not containing added mi...Free
2933-99-00-20Compounds containing an unfused five-membered hetero-atom ring in the structureFree
2933-99-00-30Compounds having a tricyclic ring systemFree
2933-99-00-90OtherFree

Top importers in this heading

325 Canadian companies imported goods under heading 29.33 according to the CBSA Canadian Importers Database, 2023 data.

Most frequent importers

  1. APOTEX INC. - Ontario - 8 codes
  2. CHARLES RIVER LABORATORIES MONTREAL ULC-LABORATOIRES CHARLES - Quebec - 7 codes
  3. AX PHARMACEUTICAL CORP. - Ontario - 6 codes
  4. BAUSCH HEALTH COMPANIES INC. - Manitoba - 6 codes
  5. CEDARLANE CORPORATION - Ontario - 6 codes
  6. MEDISCA PHARMACEUTIQUE INC - Quebec - 6 codes
  7. MILLIPORESIGMA CANADA LTD. / MILLIPORESIGMA CANADA LTEE - Ontario - 6 codes
  8. PHARMASCIENCE INC. - Quebec - 6 codes
  9. PIRAMAL HEALTHCARE CANADA LIMITED - Ontario - 6 codes
  10. TEVA CANADA LIMITED / TEVA CANADA LIMITEE - Ontario - 6 codes

Codes with importers

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