Calyculin ACAS 101932-71-2 · import duty, licences and trade rules in India

C50H81N4O15P · also called (-)-calyculin A, L-Ribonamide, N-((3S)-3-(4-((1E)-3-((2R,3R,5R,7S,8S,9R)-2-((1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyl-7,9,11,13-tetradecatetraenyl)-9-hydroxy-4,4,8-trimethyl-3-(phosphonooxy)-1,6-dioxaspiro(4.5)dec-7-yl)-1-propenyl)-2-oxazolyl)butyl)-4-deoxy-4-(dimethylamino)-5-O-methyl-, [(2R,3R,5R,7R,8S,9S)-2-[(1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyltetradeca-7,9,11,13-tetraenyl]-9-[(E)-3-[2-[(2S)-4-[[(2S,3S,4S)-4-(dimethylamino)-2,3-dihydroxy-5-methoxypentanoyl]amino]butan-2-yl]-1,3-oxazol-4-yl]prop-2-enyl]-7-hydroxy-4,4,8-trimethyl-1,10-dioxaspiro[4.5]decan-3-yl] dihydrogen phosphate, ((2R,3R,5R,7R,8S,9S)-2-((1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyltetradeca-7,9,11,13-tetraenyl)-9-((E)-3-(2-((2S)-4-(((2S,3S,4S)-4-(dimethylamino)-2,3-dihydroxy-5-methoxypentanoyl)amino)butan-2-yl)-1,3-oxazol-4-yl)prop-2-enyl)-7-hydroxy-4,4,8-trimethyl-1,10-dioxaspiro(4.5)decan-3-yl) dihydrogen phosphate
OK to trade, but watch: global treaties & export markets.
Import dutyOKAbout 27.73%HS 2934 (estimate)Rules in IndiaOKNo special Indian ban or licence foundExportOKNo export licence neededSafetyCHECKDangerous: handle with proper protection

For trade in India: OK to trade, but watch: global treaties & export markets. Import duty is about 27.73% (tariff item 2934 (estimate)).

Checked 2026-11-12 against official Indian and international lists. Sources are given under each answer.

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Every answer, with its source

Rules in IndiaOK

No special Indian ban or licence found
  • Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check.
  • Normal factory, storage and GST rules still apply.
Source: CIB&RC pesticide lists · CDSCO new drug approvals · NDPS RCS Order 2013

Exporting from IndiaOK

No export licence needed
  • Not on the SCOMET export-control list or the precursor export list.
  • The buyer’s country may still have its own import rules.
Source: DGFT SCOMET list · NDPS RCS Order 2013

Global treaties & export marketsCHECK

US: new chemical under TSCA
  • Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer).
  • No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.
  • Not on the US TSCA Inventory: EPA needs a premanufacture notice before it can be imported, unless it is a pesticide, drug or food additive, which TSCA does not cover.

Import dutyOK

About 27.73% of the import value (estimate)
  • About ₹27,730 duty on every ₹1,00,000 of import value (CIF).
  • No tariff line names this chemical, so we worked out its likely heading from its structure: 2934, nucleic acids and other heterocyclic compounds (ring containing N and O).
  • All lines under heading 2934 pay basic customs duty 7.5%; with social welfare surcharge and IGST 18% that makes about 27.73%.
  • No 8-digit line under heading 2934 names it, so it falls under one of its "Other" lines: 2934 92 00 (Other › Other fentanyls and their derivatives); 2934 99 90 (Other › Other). The other 7 lines are for named chemicals; which "Other" line applies depends on the exact structure.
  • Confirm the exact 8-digit code with your customs broker before you import.
Source: Customs Tariff of India, CBIC · Notification 45/2025-Customs · Notification 02/2026-Customs (Budget 2026) · Finance Act 2026, Fifth Schedule (tariff rates from 1 May 2026) · Notification 9/2025-Integrated Tax (Rate)

SafetyCHECK

Dangerous: handle with proper protection
  • Poisonous, even in small amounts
  • Irritates skin, eyes or breathing
  • Toxic if swallowed
  • Toxic in contact with skin
  • Causes skin irritation
  • Toxic if inhaled
  • Always read the supplier’s safety data sheet (SDS) before handling.

Price and suppliersNO DATA

Not on RasayanXchange yet
  • Post a requirement and we will find suppliers for you.

Key facts

CAS number101932-71-2
FormulaC50H81N4O15P
Also called(-)-calyculin A, L-Ribonamide, N-((3S)-3-(4-((1E)-3-((2R,3R,5R,7S,8S,9R)-2-((1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyl-7,9,11,13-tetradecatetraenyl)-9-hydroxy-4,4,8-trimethyl-3-(phosphonooxy)-1,6-dioxaspiro(4.5)dec-7-yl)-1-propenyl)-2-oxazolyl)butyl)-4-deoxy-4-(dimethylamino)-5-O-methyl-, [(2R,3R,5R,7R,8S,9S)-2-[(1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyltetradeca-7,9,11,13-tetraenyl]-9-[(E)-3-[2-[(2S)-4-[[(2S,3S,4S)-4-(dimethylamino)-2,3-dihydroxy-5-methoxypentanoyl]amino]butan-2-yl]-1,3-oxazol-4-yl]prop-2-enyl]-7-hydroxy-4,4,8-trimethyl-1,10-dioxaspiro[4.5]decan-3-yl] dihydrogen phosphate, ((2R,3R,5R,7R,8S,9S)-2-((1S,3S,4S,5R,6R,7E,9E,11E,13Z)-14-cyano-3,5-dihydroxy-1-methoxy-4,6,8,9,13-pentamethyltetradeca-7,9,11,13-tetraenyl)-9-((E)-3-(2-((2S)-4-(((2S,3S,4S)-4-(dimethylamino)-2,3-dihydroxy-5-methoxypentanoyl)amino)butan-2-yl)-1,3-oxazol-4-yl)prop-2-enyl)-7-hydroxy-4,4,8-trimethyl-1,10-dioxaspiro(4.5)decan-3-yl) dihydrogen phosphate
Tariff item (HS)2934 (estimate)
Total import dutyabout 27.73%
Anti-dumping duty (most producers)None found
SCOMET (export control)Not listed
NDPS / precursorNot listed

Questions about Calyculin A

What is the import duty on Calyculin A in India?

The total import duty on Calyculin A is about 27.73% of the import value under tariff item 2934 (estimate), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.

Is there anti-dumping duty on Calyculin A?

No anti-dumping duty on Calyculin A was found in the Customs (ADD) notifications in force.

What is the HS code (tariff item) of Calyculin A in India?

Calyculin A falls under tariff item 2934 (estimate) of the Customs Tariff of India.

Is Calyculin A restricted or licensed in India?

No special Indian ban or licence found. Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check. Normal factory, storage and GST rules still apply.

Does exporting Calyculin A from India need a licence?

No export licence needed. Not on the SCOMET export-control list or the precursor export list.

Is Calyculin A hazardous?

Dangerous: handle with proper protection. Poisonous, even in small amounts. Irritates skin, eyes or breathing. Toxic if swallowed.

Is Calyculin A regulated under global treaties or in the EU and US?

US: new chemical under TSCA. Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer). No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.

Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.