1-Ethyl-3-(4-methoxyphenyl)-6-methylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-dione CAS 144294-65-5
| CAS No. | 144294-65-5 |
| Molecular Formula | C15H15N5O3 |
| Molecular Weight | 313.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Ethyl-3-(4-methoxyphenyl)-6-methylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-dione (CAS 144294-65-5) is a high-purity analytical reference standard with the molecular formula C15H15N5O3 and a molecular weight of 313.31 g/mol.
The molecular framework of 1-Ethyl-3-(4-methoxyphenyl)-6-methylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-dione (C15H15N5O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-Ethyl-3-(4-methoxyphenyl)-6-methylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-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.
Physical & Chemical Properties
| Molecular Formula | C15H15N5O3 |
| Molecular Weight | 313.31 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 5 |
Related Ethyl Standards
- 2-(4-Methoxyphenyl)-N-(5-(1-methyl-1H-pyrazol-5-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 1171419-10-5)
- 7-(4-Methoxyphenyl)-2,5-dioxo-1,2,5,6,7,8-hexahydroquinoline-3-carboxylic acid (CAS 945105-24-8)
- 2-((4-(2-Methoxyphenyl)-6-(trifluoromethyl)pyrimidin-2-yl)oxy)ethan-1-amine (CAS 1160246-46-7)
- 1-(2-(2-(4-Methoxyphenyl)pyrrolidin-1-yl)-2-oxoethyl)pyrimidin-2(1H)-one (CAS 1090004-91-3)
- 3-((4-Methoxyphenyl)sulfonamido)thiophene-2-carboxylic acid (CAS 1153392-91-6)
- 1170905-29-9 1-[6-(3-Methoxyphenyl)pyrimidin-4-yl]piperidine-3-carboxylic acid MFCD14281606 (CAS 1170905-29-9)
- 1-[6-(4-Methoxyphenyl)pyrimidin-4-yl]piperidine-3-carboxylic acid (CAS 1172252-48-0)
- N-(4-Methoxyphenyl)-2-(4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)acetamide (CAS 1251568-16-7)
Recommended Standards
- N-(4-(3-(Trifluoromethyl)phenoxy)but-2-yn-1-yl)pivalamide (CAS 1428364-71-9)
- Ethyl (2-((3-(furan-2-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)carbamate (CAS 1797858-80-0)
- N-(4-methoxy-2-methylphenyl)-6-methyl-4-oxo-4,5-dihydro-[1,2,3]triazolo[1,5-a]pyrazine-3-carboxamide (CAS 1396783-12-2)
- Benzyl 3-nitro-7,8-dihydro-1,6-naphthyridine-6(5H)-carboxylate (CAS 1802152-61-9)
- 3-(4-Isopropylbenzyl)-6-(thiophen-2-yl)isoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263210-60-1)
- 3-Bromo-5-chloro-2-fluoro-6-iodobenzonitrile (CAS 1160574-20-8)
- PD168393 (CAS 194423-15-9)
- N-(6-Fluoro-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)cyclopropanecarboxamide (CAS 1006015-07-1)
- 2-Hydroxy-N-(1-(thiophen-2-yl)ethyl)benzamide (CAS 92029-02-2)
- 4-[(2-ethylpiperidin-1-yl)sulfonyl]benzoic acid (CAS 436091-83-7)
- Ethyl 3-(4-(4-ethylpiperazin-1-yl)phenyl)-3-oxopropanoate (CAS 940284-82-2)
- 5-(4-Bromophenyl)-2-(4-nitrophenyl)-1H-1,2,4-triazol-3(2H)-one (CAS 1000575-77-8)
- 1,2,3-Trifluoro-5-(trifluoromethyl)benzene 1,2,3-trifluoro-5-trifluoromethyl-benzene 3,4,5 - Trifluorobenzotrifluoride 80172-04-9 benzene, 1,2,3-trifluoro-5-(trifluoromethyl)- (CAS 80172-04-9)
- Casein Kinase II Receptor Peptide (CAS 198481-81-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com