7,7'-Dibromo-2,2',3,3'-tetramethoxy-9,9'-spirobi[fluorene] CAS 2376198-19-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2376198-19-3 |
| Molecular Formula | C29H22Br2O4 |
| Molecular Weight | 594.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7,7'-Dibromo-2,2',3,3'-tetramethoxy-9,9'-spirobi[fluorene] (CAS 2376198-19-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C29H22Br2O4. Molecular weight: 594.29 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C29H22Br2O4 |
| Molecular Weight | 594.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 4,9-Dibromo-2,7-bis(3-(dimethylamino)propyl)benzo[lmn][3,8]phenanthroline-1,3,6,8(2h,7h)-tetraone (CAS 1375748-41-6)
- 3,8-Dibromo-5,6-bis(octyloxy)-1,10-phenanthroline (CAS 473255-19-5)
- 1-(4-(4,8-Dibromo-2-chloro-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-yl)piperidin-1-yl)-2-(piperidin-4-yl)ethan-1-one (CAS 1099484-75-9)
- (R)-1-(4-(3,10-Dibromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)piperidin-1-yl)-2-(piperidin-4-yl)ethanone (CAS 193276-77-6)
- 4,9-dibromo-2,7-dihexylbenzo[lmn][3,8]phenanthroline-1,3,6,8-tetraone (CAS 1239327-73-1)
- 2,3-Dibromo-2-methylbutane (CAS 594-51-4)
- 6,8-Dibromo-3,3-bis(((2-ethylhexyl)oxy)methyl)-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine (CAS 700817-08-9)
- 2',7'-Dibromo-14H-spiro[dibenzo[c,h]acridine-7,9'-fluorene] (CAS 1303969-21-2)
Recommended Standards
- tert-Butyl 4-(5-(4-chlorophenyl)-4-(pyrimidin-4-yl)-1-tosyl-1h-pyrazol-3-yl)piperidine-1-carboxylate (CAS 503443-67-2)
- Epinastine impurity 59 (CAS CATO-C4X-184059)
- 2,2,3,3,4,4,5,5,5-nonafluoropentyl 9-(dicyanomethylidene)-2,7-dinitro-9H-fluorene-4-carboxylate (CAS 254973-33-6)
- Fmoc-α-Me-Glu(OtBu)-OH (CAS 1072845-48-7)
- (11bS)-2,6-Di([1,1':3',1''-terphenyl]-5'-yl)-4-hydroxy-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide (CAS 1496637-09-2)
- Levothyroxine EP Impurity J (CAS 4604-41-5)
- 3-(4-Chlorophenyl)-5-[(2,3-dimethylphenoxy)methyl]-1,2-oxazole (CAS 478066-37-4)
- 2-(6-(Tert-butoxycarbonyl)-6-azaspiro[3.5]Nonan-2-yl)acetic acid (CAS 2306270-53-9)
- 5-Amino-1-(2-methoxyphenyl)-1H-pyrazole-4-carboxylic acid (CAS 14678-94-5)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
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