1-(Pyridin-3-yl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea CAS 874298-19-8
| CAS No. | 874298-19-8 |
| Molecular Formula | C18H22BN3O3 |
| Molecular Weight | 339.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(Pyridin-3-yl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (CAS 874298-19-8) is a high-purity analytical reference standard with the molecular formula C18H22BN3O3 and a molecular weight of 339.20 g/mol.
Structurally, 1-(Pyridin-3-yl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (C18H22BN3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.5, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 339.20 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H22BN3O3 |
| Molecular Weight | 339.20 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) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Pyridin Standards
- 1-(Pyridin-2-yl)-3-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (CAS 874301-59-4)
- 1-(Pyridin-4-yl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (CAS 874298-20-1)
- 1-Phenyl-7-(pyridin-3-yl)-5-(trifluoromethyl)-1H-benzo[d]imidazole (CAS 159725-99-2)
- Methyl 4-(((3-(pyridin-2-yl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoate (CAS 733031-48-6)
- 3-Phenyl-1-(4-((pyridin-2-ylthio)methyl)piperidin-1-yl)prop-2-en-1-one (CAS 1421586-48-2)
- N-(pyridin-3-ylmethyl)-5-(1,2,3-thiadiazol-4-yl)thiophene-2-sulfonamide (CAS 320421-87-2)
- 2,8-Di(pyridin-4-yl)dibenzo[b,d]thiophene (CAS 1610765-80-4)
- N-(1-(3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)furan-2-carboxamide (CAS 1396854-94-6)
Recommended Standards
- 1-(3,5-dichlorophenyl)-5-thien-2-yl-1H-pyrazole-3-carboxylic acid (CAS 956769-56-5)
- 2-((2,3-Dichlorophenyl)amino)-5-(furan-2-ylmethylene)thiazol-4(5H)-one (CAS 380865-37-2)
- (E)-2-(2-(5-Bromothiophen-2-yl)vinyl)-6-methoxybenzoic acid (CAS 365542-85-4)
- 2-(3-Pyridyl)-N-[2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-pyridyl]acetamide (CAS 2246726-04-3)
- (4-Chloro-2-ethylpyrimidin-5-yl)boronic acid (CAS 2225169-99-1)
- 2-(4-Hydroxypiperidin-1-yl)-2-phenylacetic acid (CAS 897446-13-8)
- 2-[3-(2-methylpropoxy)phenyl]ethan-1-ol (CAS 1379198-60-3)
- 3-Methyl-4-(methylsulfonyl)benzoic Acid (CAS 1186663-65-9)
- Copper(II) 8,8-dimethylnonanoate (CAS 93918-23-1)
- (5-nitro-1H-1,3-benzodiazol-2-yl)methanamine (CAS 115103-10-1)
- 2-Bromo-4-fluoro-5-methoxyaniline (CAS 420786-92-1)
- Betahistine impurity 29 (CAS CATO-C4X-183829)
- 21413-75-2 5H-Benzocyclohepten-5-one, 1-chloro-6,7,8,9-tetrahydro- (CAS 21413-75-2)
- Exenatide (CAS 141758-74-9（free base）)
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