4'-Bromo-2,7-di-tert-butyl-9,9'-spirobi[fluorene] CAS 1365480-13-2
| CAS No. | 1365480-13-2 |
| Molecular Formula | C33H31Br |
| Molecular Weight | 507.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4'-Bromo-2,7-di-tert-butyl-9,9'-spirobi[fluorene] (CAS 1365480-13-2), molecular formula C33H31Br and molecular weight 507.50 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, a polycyclic aromatic system, 4'-Bromo-2,7-di-tert-butyl-9,9'-spirobi[fluorene] is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 507.50 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures 4'-Bromo-2,7-di-tert-butyl-9,9'-spirobi[fluorene] 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 | C33H31Br |
| Molecular Weight | 507.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 2’-Bromo-2,7-di-tert-butyl-9,9’-spirobi[fluorene] (CAS 393841-81-1)
- 5-Bromo-3-iodo-1-(phenylsulfonyl)-1H-pyrrolo-[2,3-b]pyridine-2-carboxylic acid (CAS 1299607-75-2)
- 5-Bromo-N-(2,2,2-trichloro-1-(3-(2-chlorophenyl)thioureido)ethyl)furan-2-carboxamide (CAS 303062-06-8)
- 1-(3-(6-Bromo-7-(difluoromethyl)-3,4-dihydroquinolin-1(2H)-yl)-1-(tetrahydro-2H-pyran-4-yl)-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridin-5-yl)ethan-1-one (CAS 1936429-30-9)
- (11R)-16-bromo-5,11,26-trimethyl-7-oxa-4,5,13,20,22,27-hexaazapentacyclo[22.3.1.0²,⁶.0¹³,²¹.0¹⁴,¹⁹]octacosa-1(28),2(6),3,14,16,18,21,24,26-nonaen-23-one (CAS 2573869-16-4)
- 2-Bromo-9,10-di(1-naphthyl)anthracene (CAS 929031-39-0)
- 2-Bromo-9,10-di(2-naphthyl)anthracene (CAS 474688-76-1)
- 7-Bromo Darifenacin (CAS 1391080-43-5)
Recommended Standards
- 7-Cyanomethotrexate Dimethyl Ester (CAS 112163-39-0)
- Silodosin Impurity 18 (CAS 1384966-05-5)
- Pomalidomide-PEG4-C-COOH (CAS 2097938-44-6)
- N-Methyl-N-(3-(((2-((2-oxoindolin-5-yl)amino)-5-(trifluoromethyl)pyrimidin-4-yl)amino)methyl)pyridin-2-yl)methanesulfonamide (CAS 717907-75-0)
- 4-Amino-2-ethyl-1,2-oxazolidin-3-one hydrochloride (CAS 2069183-10-2)
- 4-Chloro-3-ethylquinoline-8-carbonitrile (CAS 1334499-57-8)
- 2-((S)-1-((S)-2-Amino-5-guanidinopentanoyl)pyrrolidine-2-carboxamido)acetic acid (CAS 96817-14-0)
- tert-Butyl 4-((5-bromopyridin-2-yl)sulfonyl)piperidine-1-carboxylate (CAS 1823584-26-4)
- Tert-butyl(3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)dimethylsilane (CAS 1218789-46-8)
- 3-(3-(Methylsulfonyl)phenyl)propan-1-amine (CAS 1196151-86-6)
- 4-Imidazol-2-yl-piperidine x 2 HCl, 98% (CAS 90747-46-9)
- 2-(3,4-Dimethyl-1H-phosphol-1-yl)-1-methyl-1H-pyrrole (CAS 210532-72-2)
- 2-Hydroxyethyl n-ethyl-n-methylcarbamate (CAS 1514873-81-4)
- Mast Cell Degranulating (MCD) Peptide (CAS 32908-73-9)
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