| CAS No. | 2839561-46-3 |
| Molecular Formula | C21H19N3O5 |
| Molecular Weight | 393.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
As a certified reference material (CRM), (19S)-10-(aminomethyl)-19-ethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.0²¹¹.0⁴⁹.0¹⁵²º]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(19S)-10-(aminomethyl)-19-ethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.0²¹¹.0⁴⁹.0¹⁵²º]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione (CAS 2839561-46-3), molecular formula C21H19N3O5 and molecular weight 393.39 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H19N3O5, (19S)-10-(aminomethyl)-19-ethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.0²¹¹.0⁴⁹.0¹⁵²º]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 393.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
| Molecular Formula | C21H19N3O5 |
| Molecular Weight | 393.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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.) | 2003 |
| Nitrogen Atoms | 3 |