(S)-(+)-Camptothecin CAS 7689-03-4
| CAS No. | 7689-03-4 |
| Molecular Formula | C20H16N2O4 |
| Molecular Weight | 348.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (S)-(+)-Camptothecin is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(S)-(+)-Camptothecin (CAS 7689-03-4), molecular formula C20H16N2O4 and molecular weight 348.35 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (S)-(+)-Camptothecin (C20H16N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 348.35 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H16N2O4 |
| Molecular Weight | 348.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
Related S Standards
- (R)-(-)-Camptothecin (CAS 110351-92-3)
- (R)-Camptothecin (CAS 1083-11-0)
- Camptothecin Impurity N3 (CAS 119403-33-7)
- Camptothecin Impurity 16 (CAS 870527-52-9)
- (R)-(-)-Camptothecin-d5 (CAS 1329793-44-3)
- (S)-(+)-Camptothecin D5 (CAS 1329616-37-6)
- 7-Methyl Camptothecin (CAS 78287-26-0)
- Camptothecin Impurity 10 (CAS 68426-53-9)
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