9,9’-Spirobi[fluorene]-4-boronic Acid CAS 1421789-05-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1421789-05-0 |
| Molecular Formula | C25H17BO2 |
| Molecular Weight | 360.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
9,9’-Spirobi[fluorene]-4-boronic Acid (CAS 1421789-05-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C25H17BO2. Molecular weight: 360.21 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C25H17BO2 |
| Molecular Weight | 360.21 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) | 17.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Spirobi Standards
- 9,9'-Spirobi[fluoren]-3-ylboronic acid (CAS 1421789-04-9)
- 77-08-7 1,1'-Spirobi(indan)-5,5',6,6'-tetrol, 3,3,3',3'-tetramethyl- (8CI) 1,1'-Spirobi(1H-indene)-5,5',6,6'-tetrol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl- 1,1'-Spirobi(1H-inden)-5,5',6,6'-tetrol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl- 2,2',3,3'-Tetrahydro-3,3,3',3'-tetramethyl-1,1'-spirobi(1H-indene)-5,5',6,6'-tetrol AI3-16787 EINECS 201-003-1 NSC 512922 1,1'-Spirobi(indane-5,6-diol), 3,3,3',3'-tetramethyl- TTS 5 AI 3-16787 (CAS 77-08-7)
- 9,9'-Spirobi[fluorene]-2,2'-diamine (CAS 67665-45-6)
- 9,9'-Spirobi[fluorene]-3,3',6,6'-tetraamine (CAS 622011-41-0)
- 9,9'-Spirobi[9H-9-silafluorene] (CAS 159-68-2)
- 9,9'-Spirobi[9H-fluoren]-2-amine (CAS 118951-68-1)
- 9,9'-Spirobi[fluoren]-4-amine (CAS 1579281-06-3)
- 1,1'-(9,9'-Spirobi[fluorene]-2,2'-diyl)diethanone (CAS 22824-83-5)
Recommended Standards
- N-(3-Bromophenyl)-6,7-dimethoxyquinazolin-4-amine (CAS 153436-54-5)
- tert-Butyl (6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazol-2-yl)carbamate (CAS 1404480-24-5)
- 5-(3-Bromo-4-((4-methylbenzyl)oxy)phenyl)-1,3,4-oxadiazol-2-amine (CAS 1706453-74-8)
- 3-(3,4-Dichlorobenzyl)-2,2-dimethyl-2,3-dihydroquinazolin-4(1H)-one (CAS 866043-33-6)
- 5-Bromo-2-methyl-1,2-dihydroisoquinolin-1-one (CAS 1367905-79-0)
- 4-Bromo-3,5-difluoroanisole (CAS 202865-61-0)
- 2-Chloro-4-iodo-1-(trifluoromethoxy)benzene (CAS 1198422-69-3)
- 3-(5-Bromo-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl)tetrahydrothiophene 1,1-dioxide (CAS 1016857-76-3)
- 1-(6-Amino-1,4,4a,9a-tetrahydrobenzofuro[2,3-c]pyridin-2(3H)-yl)ethanone (CAS 1363405-89-3)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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 13829788188 / jacky.chen@cato-chem.com