9,9'-Spirobi[fluorene]-2,2'-diyldiboronic acid pinacol ester CAS 676168-63-1
| CAS No. | 676168-63-1 |
| Molecular Formula | C37H38B2O4 |
| Molecular Weight | 568.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 568.32 g/mol gives 9,9'-Spirobi[fluorene]-2,2'-diyldiboronic acid pinacol ester distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
9,9'-Spirobi[fluorene]-2,2'-diyldiboronic acid pinacol ester (CAS 676168-63-1), molecular formula C37H38B2O4 and molecular weight 568.32 g/mol, is a CATO reference standard with documented purity and traceability.
9,9'-Spirobi[fluorene]-2,2'-diyldiboronic acid pinacol ester (C37H38B2O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 9,9'-Spirobi[fluorene]-2,2'-diyldiboronic acid pinacol ester under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C37H38B2O4 |
| Molecular Weight | 568.32 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
Related Spirobi Standards
- 2-(9,9'-Spirobi[fluoren]-2-yl)-4,6-diphenyl-1,3,5-triazine (CAS 1207176-84-8)
- 9,9'-Spirobi[fluoren]-2-yldiphenylphosphine oxide (CAS 1125547-88-7)
- 9,9'-Spirobi[fluoren]-4-yldiphenylphosphine oxide (CAS 1314243-72-5)
- 4,4''-Bi(9,9'-spirobi[fluorene]) (CAS 1161009-90-0)
- 2-(9,9'-Spirobi[fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1161009-89-7)
- 2-(9,9'-Spirobi[fluoren]-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1346007-05-3)
- 2-(9,9''-Spirobi[fluoren]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 884336-44-1)
- 9,9′-Spirobi[9H-fluorene]-2,2′-diamine, N2,N2,N2′,N2′-tetrakis(4-methylphenyl)- (CAS 515833-76-8)
Recommended Standards
- 2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9'-spirobi[9H-fluorene] (CAS 728911-52-2)
- 2-(Benzenesulfonyl)-4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl 4-chlorobenzoate (CAS 338407-45-7)
- Trimethoxy(1H,1H,2H,2H-heptadecafluorodecyl)silane (CAS 83048-65-1)
- 2,5-Bis(2,2,2-trifluoroethoxy)-N-(2-((3-(trifluoromethyl)phenyl)sulfonamido)ethyl)benzamide (CAS 338404-59-4)
- 4-(Morpholinomethyl)benzimidamide hydrochloride (CAS 1221725-42-3)
- 4,6-Dimethyl-2-((piperidin-3-ylmethyl)thio)pyrimidine (CAS 1247604-18-7)
- 2-(5-(Pyridin-3-yl)-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 56894-56-5)
- Indacaterol Impurity 26 maleate (CAS 773895-24-2)
- 4-(3-Chlorophenyl)thiazole-2-carbaldehyde (CAS 383142-59-4)
- ethyl 2-sulfanyl-4-(trifluoromethyl)pyrimidine-5-carboxylate (CAS 676438-98-5)
- 2-((3,4-Dichlorobenzyl)(methyl)amino)ethanol (CAS 1249407-34-8)
- n-(5-Hydroxypentan-2-yl)benzo[d][1,3]dioxole-5-carboxamide (CAS 1394688-12-0)
- tert-butyl N-(7-hydroxyheptyl)carbamate (CAS 173436-02-7)
- Glucagon (19-29) (human, rat, porcine) (CAS 64790-15-4)
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