Singapore HS Code

HS Code 293333: Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (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) and trimeperidine (INN); salts thereof in Singapore

Q: Is HS code 293333 the same across all countries?

Yes — up to the 6-digit level, HS code 293333 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Singapore extends it under STCCED / HS-SG.

Q: What system does Singapore use to classify HS code 293333?

Singapore classifies products under the Singapore Trade Classification, Customs & Excise Duties 2022 (STCCED / HS-SG; locally STCCED 2022), which extends HS codes to 8 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 293333 in Singapore?

The official source is https://www.customs.gov.sg/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 293333 in Singapore

Under Singapore's Singapore Trade Classification, Customs & Excise Duties 2022 (STCCED 2022), HS Code 293333 is the WCO Harmonized System subheading for Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (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) and trimeperidine (INN); salts thereof. This is the most detailed internationally standardized level; Singapore extends classifications to 8 digits under its national tariff system. 293333 belongs to Section VI: Products of the chemical or allied industries, Chapter 29: Organic chemicals, Heading 2933: Heterocyclic compounds with nitrogen heteroatom(s) only.

Explore more 2026 Latest Singapore import export trade data and shipment records for HS Code Fentanyl-Class Narcotics on TradeInt global trade data platform

Classification Path of HS Code 293333 in Singapore

Section VI

Chapters (28-38) Products of the chemical or allied industries

Chapter 29

Organic chemicals

HS Code 2933

Heterocyclic compounds with nitrogen heteroatom(s) only

HS Code 293333

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (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) and trimeperidine (INN); salts thereof

HS Code 29333300

"Alfentanil ""INN"", anileridine ""INN"", bezitramide ""INN"", bromazepam ""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"", pipradol ""INN"", piritramide ""INN"", propiram ""INN"" and trimeperidine ""INN"", and salts thereof"

Singapore Tariff Classification: Singapore Trade Classification, Customs & Excise Duties 2022 (STCCED / HS-SG)

In Singapore, HS 293333 is classified under the Singapore Trade Classification, Customs & Excise Duties 2022 (STCCED 2022) — a 8-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Singapore Trade Classification, Customs & Excise Duties 2022 (STCCED / HS-SG)

Local name STCCED 2022

Digits 8

Official source https://www.customs.gov.sg/

You know what 293333 means. Now see 2026 latest real trade activity for Fentanyl-Class Narcotics in Singapore.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

Search 2026 Latest Singapore Import Data Search 2026 Latest Singapore Export Data

Top Trading Product of HS Code 2933

Top Singapore import Product Under HS Code 2933

1 293359: Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure : Other $241.2M 2 293379: Lactams : Other lactams $130.8M 3 293399: Other : Other $67.0M

Figures shown for 2025.

For more 2026 recent data, search for Singapore import trade records

Top Singapore export Product Under HS Code 2933

1 293379: Lactams : Other lactams $2.0B 2 293359: Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure : Other $424.5M 3 293339: Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Other $298.2M

Figures shown for 2025.

For more 2026 recent data, search for Singapore export trade records

Related HS Code to Singapore Fentanyl-Class Narcotics (293333)

HS Code 29333300

HS Code 293311

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure : Phenazone (antipyrin) and its derivatives

HS Code 293319

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure : Other

HS Code 293321

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure : Hydantoin and its derivatives

HS Code 293329

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure : Other

HS Code 293331

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Pyridine and its salts

HS Code 293332

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Piperidine and its salts

HS Code 293339

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Other

HS Code 293341

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing in the structure a quinoline or isoquinoline ringsystem (whether or not hydrogenated), not further fused : Levorphanol (INN) and its salts

HS Code 293349

Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing in the structure a quinoline or isoquinoline ringsystem (whether or not hydrogenated), not further fused : Other

Frequently Asked Questions

What is HS code 293333 in Singapore?

HS code 293333 covers Heterocyclic compounds with nitrogen heteroatom(s) only : Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure : Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (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) and trimeperidine (INN); salts thereof in Singapore. It sits in Chapter 29 (Organic chemicals), Heading 2933 of the Harmonized System, and is classified under STCCED / HS-SG.

Is HS code 293333 the same across all countries?

What system does Singapore use to classify HS code 293333?

Where can I officially look up HS code 293333 in Singapore?