3-(3,5-Dimethoxyphenyl)-1-(2-methoxyethyl)-1-(pyridin-4-ylmethyl)urea CAS 1286728-89-9
| CAS No. | 1286728-89-9 |
| Molecular Formula | C18H23N3O4 |
| Molecular Weight | 345.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-(3,5-Dimethoxyphenyl)-1-(2-methoxyethyl)-1-(pyridin-4-ylmethyl)urea (CAS 1286728-89-9), a certified reference material (molecular formula C18H23N3O4, MW 345.39 g/mol) for analytical method development and quality control.
3-(3,5-Dimethoxyphenyl)-1-(2-methoxyethyl)-1-(pyridin-4-ylmethyl)urea (C18H23N3O4) contains a flavonoid 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H23N3O4 |
| Molecular Weight | 345.39 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Related Dimethoxyphenyl Standards
- N-(2,4-Dimethoxyphenyl)-2-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 1286703-56-7)
- Methyl 1-((3,4-dimethoxyphenyl)sulfonyl)-4-hydroxypyrrolidine-2-carboxylate (CAS 251310-35-7)
- 3-((2,5-Dimethoxyphenyl)sulfonyl)-2H-chromen-2-one (CAS 866346-80-7)
- 3-((3,4-Dimethoxyphenyl)sulfonyl)-2H-chromen-2-one (CAS 866347-83-3)
- 1-(2,3-Dimethoxyphenyl)-3-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl)urea (CAS 1286720-31-7)
- 2-(5-(3,4-Dimethoxyphenyl)-4-oxothieno[2,3-d]pyrimidin-3(4H)-yl)acetic acid (CAS 439140-53-1)
- 6-(3,4-Dimethoxyphenyl)-3-(thiophen-2-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole (CAS 353287-72-6)
- (R)-2-(3-(3-(3,4-dimethoxyphenyl)-1-hydroxypropyl)phenoxy)acetic acid (CAS 215169-00-9)
Recommended Standards
- tert-Butyl 4-(2,4-dioxo-1,4-dihydroquinazolin-3(2H)-yl)piperidine-1-carboxylate (CAS 1281199-80-1)
- 2-[2-[(Z)-(4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)methyl]naphthalen-1-yl]oxyacetic acid (CAS 1348775-25-6)
- 3-[4-[(2-Methylpropan-2-yl)oxycarbonyl]piperazin-1-yl]indolizine-6-carboxylic acid (CAS 1251009-25-2)
- [1,1'-Biphenyl]-4-yl(3-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)azetidin-1-yl)methanone (CAS 1351610-43-9)
- 8-(4-n-Butylphenyl)-8-oxooctanoic acid (CAS 951892-15-2)
- 2-(4-Fluorophenyl)-2-morpholinoethylamine (CAS 851169-46-5)
- (S)-tert-Butyl 3-(4-fluoro-2-nitrophenoxy)pyrrolidine-1-carboxylate (CAS 1233860-23-5)
- 3-(3,5-Difluorophenyl)-3-azabicyclo[3.1.0]hexane-2,4-dione (CAS 866150-58-5)
- 6-Bromo-8-methoxychroman-4-one (CAS 81258-20-0)
- (3-Hydroxypyrrolidin-1-yl)(3-methylthiophen-2-yl)methanone (CAS 1341482-62-9)
- 2-(4-Bromo-2-(difluoromethyl)-5-methoxypyridin-3-yl)acetonitrile (CAS 1807021-64-2)
- (2E,4Z)-4-{[(4-fluorophenyl)amino]methylidene}pent-2-enedinitrile (CAS 339015-84-8)
- 2-Bromo-6-chloro-5-(difluoromethyl)-3-methoxypyridine (CAS 1806030-18-1)
- Rac1 Inhibitor F56, control peptide (CAS 1315378-77-8)
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