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HSN 293318% GSTITC EligibleRCM: Check notificationsLast reviewed: 22 Jan 2026

HETEROCYCLIC COMPOUNDS WITH NITROGEN HETERO-ATOM(S) ONLY

GST rate for HSN 2933 is 18%. Use the calculator, copy invoice-ready details, and verify ITC/RCM hints before filing (FY 2025–26).

Not legal advice • Verify before filing
Quick summary
TypeGoods
Intra-state split9% CGST + 9% SGST
Inter-state18% IGST
Tip: Compare nearby headings and chapter notes to avoid wrong classification.

GST Rate for HSN 2933

18%

Specific items under 2933

HSN CodeDescriptionGST Rate
293311PHENAZONE (ANTIPYRIN) AND ITS DERIVATES18%
293319OTHER :18%
293321HYDANTOIN AND ITS DERIVATIVES18%
293329OTHER :18%
293331PYRIDINE AND ITS SALTS18%
293332PIPERIDINE AND ITS SALTS18%
293333ALFENTANIL (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 THEREOF:18%
293334OTHER FENTANYLS AND THEIR DERIVATIVES18%
2933353-QUINUCLIDINOL18%
2933364-ANILINO-N-PHENETHYLPIPERIDINE (ANPP)18%
293337N-PHENETHY L-4-PIPERIDONE (NPP18%
293339OTHER :18%
293341LEVORPHANOL (INN) AND ITS SALTS18%
293349OTHER18%
293352MALONYLUREA (BARBITURIC ACID) AND ITS SALTS18%
293353ALLOBARBITAL (INN), AMOBARBITAL (INN), BARBITAL (INN), BUTALBITAL (INN), BUTOBARBITAL (INN), CYCLOBARBITAL (INN), METHYLPHENOBARBITAL (INN), PENTOBARBITAL (INN), SECBUTABARBITAL (INN), PHENOBARBITAL (INN),] SECOBARBITAL (INN), AND VINYLBITAL (INN), SALTS THEREOF18%
293354OTHER DERIVATIVES OF MALONYLUREA (BARBITURIC ACID), SALTS THEREOF18%
293355LOPRAZOLAM (INN), MECLOQUALONE (INN), METHAQUALONE (INN) AND ZIPEPROL (INN), SALTS THEREOF18%
293359OTHER :18%
293361MELAMINE18%
293369OTHER :18%
2933716-HEXANELACTAM (EPSILON-CAPROLACTAM)18%
293372CLOBAZAM (INN) AND METHYPRYLON (INN)18%
293379OTHER LACTAMS :18%
293391ALPRAZOLAM (INN), CAMAZEPAM (INN CHLORIDIAZEPOXIDE (INN),CLONAZEPAM (INN), CLORAZEPATE, DELORAZEPAM (INN), DIAZEPAM (INN), ESTAZOLAM (INN), ETHYL LOFLAZEPATE (INN), FLUDIAZEPAM (INN), FLUNITRZEPAM (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), TAMAZEPAM (INN), TETRAZEPAM (INN) AND TRIAZOLAM (INN), SALTS THEREOF18%
293392AZINPHOS-METHYL (ISO)18%
293399OTHER:18%
29331100PHENAZONE (ANTIPYRIN) AND ITS DERIVATES18%
293319103-CARBOXY (PARA SULPHO-PHENYL)-5- PYRAZOLONE18%
293319200 (2,5- DICHLORO-4-SULPHO PHENYL)-3-METHYL- 5-PYRAZOLONE18%
293319303-METHYL-1(4-SULPHO-O-TOLUYL-5-PYRAZOLONE)18%
29331940PHENYLMETHYLPYRAZOLONE18%
293319501-PHENYL-5-PYRAZOLONE-3-CARBOXYLIC ACID ETHYLESTER18%
293319601-(M-SULPHOPHENYL)-3-PYRAZOLONE18%
29331970ANALGIN18%
29331980OXYPHENBUTAZONE18%
29331990HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - COMPOUNDS CONTAINING AN UNFUSED PYRAZOLE RING (WHETHER OR NOT HYDROGENATED) IN THE STRUCTURE :-OTHER : OTHER18%
29331991Fluoro-3-(difluoromethyl)-1-methyl-1h-pyrazole-4-carbonyl fluoride18%
29331999Other18%
29332100HYDANTOIN AND ITS DERIVATIVES18%
29332910TINIDAZOLE18%
29332920METRONIDAZOLE, METRONIDIAZOLE BENZOATE18%
29332930MEBENDAZOLE18%
29332940DIMETRIDAZOLE18%
29332950ALBENDAZOLE18%
29332960IMIDACLOPRID (ISO)18%
29332990OTHER18%
29333100PYRIDINE AND ITS SALTS18%
29333200PIPERIDINE AND ITS SALTS18%
29333300HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - COMPOUNDS CONTAING AN UNFUSED PYRIDINE RING (WHETHER OR NOT HYDROGENATED) IN THE STRUCTURE : BROMAZEPAM (INN), METHYLPHENIDATE (INN), PENTAZOCINE (INN), PHENCYCLINDINE (INN) (PCP), PIPRADROL (INN), PROPIRAM (INN); SALTS THEREOF18%
29333311ALFENTANIL (INN) AND ITS SALT18%
29333312ANILERIDINE (INN) AND ITS SALT18%
29333313BEZITRAMIDE (INN) AND ITS SALT18%
29333314BROMAZEPAM (INN) AND ITS SALT18%
29333315CARFENTANIL (INN) AND ITS SALT18%
29333316DIFENOXIN (INN) AND ITS SALT18%
29333317DIPHENOXYLATE (INN) AND ITS SALT18%
29333318DIPIPANONE (INN) AND ITS SALT18%
29333321FENTANYL (INN) AND ITS SALT18%
29333322KETOBEMIDONE (INN) AND ITS SALT18%
29333323METHYLPHENIDATE (INN) AND ITS SALT18%
29333324PENTAZOCINE (INN) AND ITS SALT18%
29333325PETHIDINE (INN) AND ITS SALT18%
29333326PETHIDINE (INN) INTERMEDIATE A AND ITS SALT18%
29333327PHENCYCLIDINE (INN) (PCP) AND ITS SALT18%
29333328PHENOPERIDINE (INN) AND ITS SALT18%
29333331PIPRADROL (INN) AND ITS SALT18%
29333332PIRITRAMIDE (INN) AND ITS SALT18%
29333333PROPIRAM (INN) AND ITS SALT18%
29333334REMIFENTANIL (INN) AND ITS SALT18%
29333335TRIMEPERIDINE (INN) AND ITS SALT18%
29333400OTHER FENTANYLS AND THEIR DERIVATIVES18%
293335003-QUINUCLIDINOL18%
293336004-ANILINO-N-PHENETHYLPIPERIDINE (ANPP)18%
29333700N-PHENETHY L-4-PIPERIDONE (NPP18%
29333911AMINO PYRIDINE18%
29333912ALPHA PICOLINE (2-METHYL PYRIDINE)18%
29333913GAMMA PICOLINE (4-METHYL PYRIDINE)18%
29333914CHLOROPHENIRAMINE MALEATE18%
29333915DIPHENOXYLATE HYDROCHLORIDE18%
29333916BETA PICOLINE (3-METHYL PYRIDINE)18%
29333917CHLORANTRANILIPROLE (ISO)18%
29333918LUTIDINE (DIMETHYL PYRIDINE)18%
29333919HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - COMPOUNDS CONTAING AN UNFUSED PYRIDINE RING (WHETHER OR NOT HYDROGENATED) IN THE STRUCTURE :-OTHER : DERIVATIVES OF PYRIDINE : OTHER18%
29333920HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - COMPOUNDS CONTAING AN UNFUSED PYRIDINE RING (WHETHER OR NOT HYDROGENATED) IN THE STRUCTURE :-OTHER : PIPERIDINE AND ITS DERIVATIVES18%
29333921ACETAMIPRID (ISO)18%
29333922IMAZETHAPYR (ISO)18%
29333929OTHER18%
293339301-AZABICYCLO(2,2,2)OCTAN-3-OL18%
29333940BENZENE ACETIC ACID, ALPHA -HYDROXY- ALPHA-PHENYL, 1- AZABICYCLO-AZABICYCLO [2.2.2.] OCT-3-YL ESTER18%
29333990OTHER18%
29334100LEVORPHANOL (INN) AND ITS SALTS18%
29334900OTHER18%
29335200MALONYLUREA (BARBITURIC ACID) AND ITS SALTS18%
29335300ALLOBARBITAL (INN), AMOBARBITAL (INN), BARBITAL(INN), BUTALBITAL (INN), BUTOBARBITAL (INN),CYCLOBARBITAL (INN), METHYLPHENOBARBITAL (INN),PENTOBARBITAL (INN), SECBUTABARBITAL (INN),PHENOBARBITAL (INN), ] SECOBARBITAL (INN), AND VINYLBITAL (INN), SALTS THEREOF18%
29335400OTHER DERIVATIVES OF MALONYLUREA (BARBITURIC ACID),SALTS THEREOF18%
29335500LOPRAZOLAM (INN), MECLOQUALONE (INN),METHAQUALONE (INN) AND ZIPEPROL (INN), SALTS THEREOF18%
29335910AMINOPHYLLINE (CORDOPHYLIN)18%
29335920TRIMETHOPRIM18%
29335930DIETHYL CARBAMAZINE CITRATE18%
293359401-AMINO-4-METHYL PIPERAZINE18%
29335950BISPYRIBAC-SODIUM (ISO)18%
29335990OTHER18%
29336100MELAMINE18%
29336910CYANURIC ACID AND ITS SALTS18%
293369204-[4,6-BIS(2,4-DIMETHYLPHENYL)-1,3,5- TRIAZINE-2-YL]-1,3-BENZENEDIOL18%
29336930Tris(2-hydroxyethyl) isocyanurate18%
29336940Ethylhexyltriazone18%
293369502,4,6-TRI(2,4-DYHYDROXYL-3-METHYLPHENYL)-1,3,5-TRIAZINE18%
29336990OTHER18%
293371006-HEXANELACTAM (EPSILON-CAPROLACTAM)18%
29337200CLOBAZAM (INN) AND METHYPRYLON (INN)18%
29337900HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - LACTAMS : OTHER LACTAMS18%
29337910N-methyl-2-pyrrolidone18%
29337920N-ethyl-2-pyrrolidone18%
29337990Other18%
29339100ALPRAZOLAM (INN), CAMAZEPAM (INN) CHLORIDIAZEPOXIDE (INN),CLONAZEPAM (INN), CLORAZEPATE, DELORAZEPAM (INN), DIAZEPAM (INN), ESTAZOLAM (INN), ETHYL LOFLAZEPATE (INN), FLUDIAZEPAM (INN), FLUNITRZEPAM (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), TAMAZEPAM (INN), TETRAZEPAM (INN) AND TRIAZOLAM (INN), SALTS THEREOF18%
29339200Azinphos-methyl (ISO)18%
29339900HETEROCYCLIC COMPOUNDS WITH NITROGEN HETEROATOM( S) ONLY - OTHER : OTHER18%
29339910Imidazo pyridine methyl amine18%
29339920CARBENDAZIM (ISO)18%
29339990Other18%

Tax calculator for HSN 2933

Enter a taxable value to calculate GST. You can use this for a quick invoice estimate.

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Not legal advice • Verify before filing • For services (99), place-of-supply rules can change tax type.

Invoice example (₹1,000 taxable value)

Intra-state (CGST + SGST)
Taxable value₹1,000
CGST (9%)90.00
SGST (9%)90.00
Total invoice1180.00
Inter-state (IGST)
Taxable value₹1,000
IGST (18%)180.00
Total invoice1180.00
Chapter note
Organic Chemicals. Hydrocarbons, Alcohols, Ethers. Mostly 18%.

Compliance pointers (ITC / RCM / classification)

ITC hint

Input Tax Credit depends on usage conditions, restrictions, and supplier eligibility. Treat this as a quick hint — verify for edge cases.

ITC Eligible
RCM / special cases

Reverse Charge is notification-based and can depend on supplier status and transaction type. If you see a warning, double-check notifications and your invoice terms.

No chapter-level RCM note found. Still verify based on notification + supplier category.
Classification checks
  • Compare adjacent headings within Chapter 29 before finalizing.
  • Use chapter notes to avoid common confusions (materials vs finished goods, kits, etc.).
  • For services (99), place-of-supply can change whether IGST/CGST+SGST applies.

FAQs for HSN 2933

What is the GST rate for HSN 2933?

GST rate for HSN 2933 is 18%. Always verify the latest CBIC/GST notifications for changes.

Is HSN mandatory on invoices?

HSN is generally required on B2B invoices; the number of digits depends on turnover and the nature of supply. Exports/imports typically use more detailed codes.

How do I use this code on an invoice?

Add HSN 2933 in the line item and apply GST @ 18%. For intra-state supplies: 9% CGST + 9% SGST. For inter-state supplies: 18% IGST.

Does ITC apply for this HSN?

ITC depends on conditions and restrictions under GST law, plus the nature of usage and supplier eligibility. Use the ITC badge as a hint and verify with your CA for edge cases.

Can Reverse Charge (RCM) apply here?

RCM is notification-based and depends on the supply category, supplier status, and transaction type. If you see an RCM note, treat it as a “verify” signal.

What if I pick the wrong HSN?

Wrong classification can cause rate mismatch, notices, interest/penalty exposure, and reconciliation issues. Compare nearby headings and chapter notes before finalizing.

Sources & accuracy

Not legal advice • Always verify before filing • Page URL uses your deployed site base (no localhost leaks).

Next steps after choosing HSN 2933