SMILES:
CCC1(C2=C(COC1=O)C(=O)N3CC4=CC5=CC=CC=C5N=C4C3=C2)O
Chemical Structure
Check the
Camptothecin (CPT)
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| 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 | |
|---|---|---|
| CAS Number | 7689-03-4 | |
| Molecular Formula |
C20H16N2O4 |
|
| Molecular Weight (MW) | 348.35 | |
| SMILES | CCC1(C2=C(COC1=O)C(=O)N3CC4=CC5=CC=CC=C5N=C4C3=C2)O | |
| InChIKey | VSJKWCGYPAHWDS-FQEVSTJZSA-N |
|
Concentration
Volume
Mass
|
|---|
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| 0.1M NaOH | 2.5 mg/mL |
| DMSO |
Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.) |
| Water | Insoluble |
| DMSO |
7 mg/mL
(20.09 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | Insoluble |
| Ethanol | Insoluble |
| DMSO |
6 mg/mL
(17.22 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | Insoluble |
| Ethanol | Insoluble |
| DMSO |
4 mg/mL
(11.48 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | Insoluble |
| Ethanol | Insoluble |
| DMSO |
4 mg/mL
(11.48 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | Insoluble |
| Ethanol | Insoluble |
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
- Preheat media/saline to 37°C.
- Mix rapidly (pipette/vortex) upon addition.
- For complex mixes, always add the aqueous phase last.
- Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.
Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.
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- Camptothecin (CPT) Working Concentration | Cell Culture | Treatment
- Camptothecin (CPT) Solubility in DMSO
- Camptothecin (CPT) Stock Solution
- Camptothecin (CPT) Storage
- Camptothecin (CPT) Stability
- Camptothecin (CPT) Combination Database
- Camptothecin (CPT) Molecular Weight
- Camptothecin (CPT) CAS Number
- Camptothecin (CPT) Chemical Structure (2D and 3D)
- Camptothecin (CPT) IC50 for Cell-based and Cell-free Assays
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Note: Technical data last updated: Sep 1, 2026.