4,4,5,5-Tetramethyl-2-(pyren-2-yl)-1,3,2-dioxaborolane CAS 853377-11-4
| CAS No. | 853377-11-4 |
| Molecular Formula | C22H21BO2 |
| Molecular Weight | 328.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4,4,5,5-Tetramethyl-2-(pyren-2-yl)-1,3,2-dioxaborolane (CAS 853377-11-4), molecular formula C22H21BO2 and molecular weight 328.21 g/mol, is a CATO reference standard with documented purity and traceability.
4,4,5,5-Tetramethyl-2-(pyren-2-yl)-1,3,2-dioxaborolane (C22H21BO2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C22H21BO2 |
| Molecular Weight | 328.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Tetramethyl Standards
- 6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)spiro[indoline-3,4'-piperidin]-2-one (CAS 1384162-44-0)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-en-1-yl benzoate (CAS 2121513-44-6)
- 4,4,5,5-tetramethyl-2-(pyren-4-yl)-1,3,2-dioxaborolane (CAS 888950-09-2)
- 4,4,5,5-Tetramethyl-2-pyren-1-yl-1,3,2-dioxaborolane (CAS 349666-24-6)
- Benzyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)bicyclo[1.1.1]pentane-1-carboxylate (CAS 2655547-50-3)
- Methyl 4-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)bicyclo[1.1.1]pentan-1-yl)benzoate (CAS 2826264-12-2)
- Methyl 9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6,7-dihydro-5H-benzo[7]annulene-3-carboxylate (CAS 2768534-29-6)
- 3-[4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrazol-1-ylmethyl]-benzoic acid (CAS 1450642-63-3)
Recommended Standards
- 3-(4-Bromophenyl)-1-(p-tolyl)-1H-pyrazol-5-amine (CAS 477762-14-4)
- 3-(4-Bromophenyl)-1-(o-tolyl)-1H-pyrazol-5-amine (CAS 618098-36-5)
- 5-(3,5-Ditrifluoromethylphenyl)-5-oxovaleric acid (CAS 898788-07-3)
- 2-(Fluoranthen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 863878-53-9)
- N-Allyl-2-aminobenzamide (CAS 4943-82-2)
- IDT6 (CAS 1509939-03-0)
- 5,5'-(Piperazine-2,5-diyl)bis(2-hydroxybenzamide)Discontinued (CAS 2517940-02-0)
- N-(2-(3-Fluorophenyl)benzo[d]oxazol-5-yl)-3-methyl-4-nitrobenzamide (CAS 331243-85-7)
- (4Z)-3-tert-Butyl-1-phenyl-4-[(thiophen-3-yl)methylidene]-4,5-dihydro-1H-pyrazol-5-one (CAS 1025206-25-0)
- 1-(5-chloro-1H-pyrrol-2-yl)ethanone (CAS 80311-19-9)
- 3,5-Difluoro-4-nitromandelic acid (CAS 1804516-65-1)
- Methyl 4-((6-chloropyridin-3-yl)methyl)benzoate (CAS 1370587-28-2)
- (S)-5-Benzyl-5-azaspiro[2.4]heptan-7-aminehydrochloride (CAS 2155805-89-1)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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