Combretastatin A4CAS 117048-59-6 · import duty, licences and trade rules in India
Combretastatin A4 is a stilbenoid. For trade in India: OK to trade, but watch: global treaties & export markets. Import duty is about 27.73% (tariff item 2909 (estimate)).
Checked 2026-11-12 against official Indian and international lists. Sources are given under each answer.
What Combretastatin A4 is, its uses, properties and related chemicals: Combretastatin A4 on ChemXpress →
Every answer, with its source
Rules in IndiaOK
- Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check.
- Normal factory, storage and GST rules still apply.
Exporting from IndiaOK
- Not on the SCOMET export-control list or the precursor export list.
- The buyer’s country may still have its own import rules.
Global treaties & export marketsCHECK
- 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 ₹27,730 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: 2909, ethers, ether-alcohols, ether-phenols and peroxides (ether or peroxide group).
- All lines under heading 2909 pay basic customs duty 7.5%; with social welfare surcharge and IGST 18% that makes about 27.73%.
- No 8-digit line under heading 2909 names it, so it falls under one of its "Other" lines: 2909 19 90 (Other › Other); 2909 30 19 (Anisole and their derivatives › Other); 2909 30 90 (Aromatic ethers and their halogenated, sulphonated nitrated or nitrosated deriva); 2909 44 00 (Ether-alcohols and their halogenated, sulphonated nitrated or nitrosated derivat); 2909 49 90 (Other); and 1 more. The other 19 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.
SafetyCHECK
- Burns skin and eyes, eats into metal
- Poisonous, even in small amounts
- Toxic if swallowed
- Toxic in contact with skin
- Causes serious eye damage
- Toxic if inhaled
- Always read the supplier’s safety data sheet (SDS) before handling.
Price and suppliersNO DATA
- Post a requirement and we will find suppliers for you.
Key facts
| CAS number | 117048-59-6 |
|---|---|
| Formula | C18H20O5 |
| Also called | Combretastatin A-4, Combrestatin A4, Combretastatin 4, 2'-deoxycombretastatin A1 |
| Tariff item (HS) | 2909 (estimate) |
| Total import duty | about 27.73% |
| Anti-dumping duty (most producers) | None found |
| SCOMET (export control) | Not listed |
| NDPS / precursor | Not listed |
Questions about Combretastatin A4
What is the import duty on Combretastatin A4 in India?
The total import duty on Combretastatin A4 is about 27.73% of the import value under tariff item 2909 (estimate), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Combretastatin A4?
No anti-dumping duty on Combretastatin A4 was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Combretastatin A4 in India?
Combretastatin A4 falls under tariff item 2909 (estimate) of the Customs Tariff of India.
Is Combretastatin A4 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 Combretastatin A4 from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Combretastatin A4 hazardous?
Dangerous: handle with proper protection. Burns skin and eyes, eats into metal. Poisonous, even in small amounts. Toxic if swallowed.
Is Combretastatin A4 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.
Related chemicals
Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.