Boronic acid, (silanetetrayltetra-4,1-phenylene)tetrakis- (9CI) CAS 499142-74-4
| CAS No. | 499142-74-4 |
| Molecular Formula | C24H24B4O8Si |
| Molecular Weight | 511.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Boronic acid, (silanetetrayltetra-4,1-phenylene)tetrakis- (9CI) (CAS 499142-74-4), molecular formula C24H24B4O8Si and molecular weight 511.77 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Boronic acid, (silanetetrayltetra-4,1-phenylene)tetrakis- (9CI) (C24H24B4O8Si) contains a flavonoid core, 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 511.77 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
As a certified reference material (CRM), Boronic acid, (silanetetrayltetra-4,1-phenylene)tetrakis- (9CI) 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 | C24H24B4O8Si |
| Molecular Weight | 511.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Boronic Standards
- Boronic acid, [4-[bis(4-bromophenyl)amino]phenyl]- (CAS 300700-19-0)
- Boronic acid, b-[3-[[[(3-chlorophenyl)methyl]amino]carbonyl]phenyl]- (CAS 874288-26-3)
- Boronic acid, [3-[(dibutylamino)carbonyl]phenyl]- (CAS 397843-72-0)
- Boronic acid, b-[3-[[(2-chlorophenyl)amino]carbonyl]phenyl]- (CAS 874288-33-2)
- Boronic acid, b-[3-[[(3-chlorophenyl)amino]carbonyl]phenyl]- (CAS 874288-32-1)
- Boronic acid, b-[3-[(cyclohexylethylamino)carbonyl]phenyl]- (CAS 874288-37-6)
- Boronic acid, b-[3-[[[(2-fluorophenyl)methyl]amino]carbonyl]phenyl]- (CAS 874288-21-8)
- Boronic acid, b-[3-[[[(3-fluorophenyl)methyl]amino]carbonyl]phenyl]- (CAS 874288-20-7)
Recommended Standards
- SB-699551A (free base) (CAS 791789-61-2)
- N-(4-tert-Butylphenyl)-4-(2-{[(4-tert-butylphenyl)carbamothioyl]amino}ethyl)piperazine-1-carbothioamide (CAS 866038-43-9)
- 19775-48-5 C32H49NO4 Daphmacrine W1193 (CAS 19775-48-5)
- (2S,3R,4R,5R)-5-(benzyloxymethyl)-4-[tert-butyl(dimethyl)silyl]oxy-3-methoxy-2-(3-quinolyl)tetrahydrofuran-2-ol (CAS 1583260-11-0)
- 5-{[(4-methoxy-2-nitrophenyl)amino]methylidene}-2,2-dimethyl-1,3-dioxane-4,6-dione (CAS 25165-69-9)
- 1-Bromo-4-(4-fluorophenoxy)benzene (CAS 55102-99-3)
- 2-(Benzyloxy)-8-chloro-3-ethyl-1,7-naphthyridine (CAS 1802675-88-2)
- 6-(tert-Butyl)-3-isopropyl-6,7-dihydroisothiazolo[5,4-d]pyrimidin-4(5H)-one (CAS 58045-26-4)
- 3-Fluoro-4-(3-fluorophenoxy)aniline (CAS 937597-93-8)
- 3-(Trifluoromethyl)-4-((trifluoromethyl)thio)aniline (CAS 1301739-31-0)
- Carbomycin (CAS 4564-87-8)
- Ethyl 4-(4-methoxyphenyl)-2-methylthiazole-5-carboxylate (CAS 887590-01-4)
- tert-Butyl 8-bromo-6-chloro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2680889-40-9)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
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