Methyl (2E)-3-[4-[(2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridin-3-yl)methyl]phenyl]-2-propenate CAS 1197880-09-3
| CAS No. | 1197880-09-3 |
| Molecular Formula | C21H23N3O2 |
| Molecular Weight | 349.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl (2E)-3-[4-[(2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridin-3-yl)methyl]phenyl]-2-propenate (CAS 1197880-09-3), molecular formula C21H23N3O2 and molecular weight 349.43 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl (2E)-3-[4-[(2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridin-3-yl)methyl]phenyl]-2-propenate (C21H23N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C21H23N3O2 |
| Molecular Weight | 349.43 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Recommended Standards
- Demethoxyfumitremorgin C (CAS 111768-16-2)
- 1-Benzyl-3-(1-(cyclopropanecarbonyl)-1,2,3,4-tetrahydroquinolin-6-yl)urea (CAS 1203182-88-0)
- MDA-19 (CAS 1048973-47-2)
- ML324 (CAS 1222800-79-4)
- n-Cyclopropylbenzo[d]thiazol-2-amine (CAS 885461-30-3)
- Methyl (((9H-fluoren-9-yl)methoxy)carbonyl)serinate (CAS 851678-66-5)
- Benzene, 1,1'-oxybis[3-(3-phenoxyphenoxy)- (CAS 3705-62-2)
- Furan-2-yl(2-((2-methylbenzyl)thio)-4,5-dihydro-1H-imidazol-1-yl)methanone (CAS 862826-92-4)
- pyrimidine-4-carbothioamide (CAS 88891-74-1)
- Cefdinir Impurity 81 (CAS 137171-77-8)
- 2-Chloro-3-(1H-tetrazol-5-yl)pyridine (CAS 899808-67-4)
- 3-tert-butyl 5-methyl 7-fluoro-4,4-dimethyl-4H,5H-imidazo[1,5-a]quinoxaline-3,5-dicarboxylate (CAS 148858-31-5)
- 1-(1-{3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazol-5-yl}ethyl)piperazine dihydrochloride (CAS 1169989-01-8)
- Semaglutide（sodium salt） (CAS CATO-C4X-222619)
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