Molekula
(S)-(+)-Camptothecin
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
(S)-(+)-Camptothecin is a natural alkaloid and topoisomerase I inhibitor used in cancer research and drug development. It is a key compound in the synthesis of anticancer agents such as irinotecan and topotecan. Available with a CAS number of 7689-03-4, molecular formula C20H16N2O4, and molecular weight 348.35 g/mol. Stored at 2 to 8 °C. Hazard classification includes signal word Danger. Molekula supplies (S)-(+)-Camptothecin from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 26 November 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 mg — £76.20 per pack ex VAT · £91.44 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Off-white to pale yellow powder |
| Melting Point | 261 - 265 ℃ |
| Specific rotation | +29 to +31 |
| Purity (HPLC) | ≥99% |
| Loss on Drying | ≤1% |
| Assay HPLC | ≥98% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 275-277 °C |
Source: PubChem CID 24360 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 48231379 |
| CAS Number | 7689-03-4 |
| IUPAC Name | (19S)-19-ethyl-19-hydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione |
| Molecular Formula | C20H16N2O4 |
| Molecular Weight | 348.35 |
| Exact Mass | 348.111 |
| SMILES | CC[C@@]1(C2=C(COC1=O)C(=O)N3CC4=CC5=CC=CC=C5N=C4C3=C2)O |
| InChIKey | VSJKWCGYPAHWDS-FQEVSTJZSA-N |
| InChI | InChI=1S/C20H16N2O4/c1-2-20(25)14-8-16-17-12(7-11-5-3-4-6-15(11)21-17)9-22(16)18(23)13(14)10-26-19(20)24/h3-8,25H,2,9-10H2,1H3/t20-/m0/s1 |
| PubChem CID | 24360 |
| UN Number | UN1544 |
| REACH Code | Y110 |
| HTS Code | 29397900 |
| Tariff Code | 2939799090 |
Safety & GHS
-
Toxic
GHS06
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Serious Health Hazard
GHS08
Hazard statements
- H301 Toxic if swallowed
- H340 May cause genetic defects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P270 Do not eat, drink or smoke when using this product
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (s)-camptothecine
- 20(S)-Camptothecine
- 21,22-Secocamptothecin-21-oic acid lactone
- Campathecin
- camptothecin
- Camptothecine
- Camptothecine (S,+)
- d-Camptothecin
- Prestwick2_000200
- SpecPlus_000712
Frequently asked questions
What is (S)-(+)-Camptothecin used for?
It is a topoisomerase I inhibitor used in cancer research and the development of anticancer drugs.
What is the chemical formula and molecular weight of (S)-(+)-Camptothecin?
The formula is C20H16N2O4 with a molecular weight of 348.35 g/mol.
How should (S)-(+)-Camptothecin be stored?
It should be stored at 2 to 8 °C, protected from light and moisture.
What grade is available for (S)-(+)-Camptothecin?
It is available in research grade, suitable for laboratory use.
Can Molekula supply (S)-(+)-Camptothecin in bulk?
Yes, Molekula can supply (S)-(+)-Camptothecin in bulk quantities—please contact sales for details.
What documentation comes with an order of (S)-(+)-Camptothecin?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.