3-(4-Ethoxyphenyl)-5-(1-methylindol-3-yl)-1H,4H,5H-1,2-diazin-6-one CAS 1023533-10-9
| CAS No. | 1023533-10-9 |
| Molecular Formula | C21H21N3O2 |
| Molecular Weight | 347.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-(4-Ethoxyphenyl)-5-(1-methylindol-3-yl)-1H,4H,5H-1,2-diazin-6-one (C21H21N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 347.41 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.
3-(4-Ethoxyphenyl)-5-(1-methylindol-3-yl)-1H,4H,5H-1,2-diazin-6-one (CAS 1023533-10-9), molecular formula C21H21N3O2 and molecular weight 347.41 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C21H21N3O2 |
| Molecular Weight | 347.41 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- n-(3-Methylphenyl)-3-(morpholine-4-carbonyl)quinolin-4-amine (CAS 1021262-22-5)
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- 4-Methanesulfonyl-2-(2-phenylethenesulfonamido)butanoic acid (CAS 1025448-55-8)
- (2-Isocyanatoethoxy)benzene (CAS 4747-92-6)
- 5,6,7,8-Tetrahydro-4H-thieno[3,2-b]azepine (CAS 180340-57-2)
- 3-(Bromomethyl)-3-methyloxane (CAS 1697452-03-1)
- Landiolol Impurity 106 (CAS CATO-C4X-2621106)
- 7-Chloro-4-fluoroindoline (CAS 1700248-22-1)
- 5-Fluoroquinoxalin-2-ol (CAS 55687-16-6)
- Pazopanib Impurity 50 (CAS 1226500-00-0)
- 2-Pyridazin-3-ylacetic acid sodium salt (CAS 1378372-16-7)
- Zonisamide Chloride (CAS 73101-65-2)
- Dendroaspis Natriuretic Peptide (CAS 255721-52-9)
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