11-Bromobenzo[b]phenanthro[9,10-e][1,4]dioxine CAS 2189692-35-9
| CAS No. | 2189692-35-9 |
| Molecular Formula | C20H11BrO2 |
| Molecular Weight | 363.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
11-Bromobenzo[b]phenanthro[9,10-e][1,4]dioxine (CAS 2189692-35-9), molecular formula C20H11BrO2 and molecular weight 363.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 11-Bromobenzo[b]phenanthro[9,10-e][1,4]dioxine (C20H11BrO2) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 363.20 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H11BrO2 |
| Molecular Weight | 363.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | Br-containing |
Related Bromobenzo Standards
- Benzyl (6-bromobenzo[b]thiophen-2-yl)carbamate (CAS 2570190-27-9)
- N-(6-Bromobenzo[d]thiazol-2-yl)-3-(thiophen-2-yl)acrylamide (CAS 476307-91-2)
- 8-((6-Bromobenzo[d][1,3]dioxol-5-yl)thio)-1H-purin-6-amine (CAS 852030-25-2)
- N-(6-Bromobenzo[d]thiazol-2-yl)-3-phenylacrylamide (CAS 307327-10-2)
- Methyl 2-(1-(6-bromobenzo[d]thiazol-2-yl)-5-hydroxy-1H-pyrazol-3-yl)acetate (CAS 1956370-70-9)
- 1-(4-Bromobenzo[d]thiazol-2-yl)-3-(thiophen-2-ylmethyl)urea (CAS 1203283-23-1)
- 2-((2-Bromobenzo[4,5]imidazo[1,2-c]quinazolin-6-yl)thio)acetonitrile (CAS 422289-89-2)
- 1-(4-Bromobenzo[d]thiazol-2-yl)-3-(thiophen-2-yl)urea (CAS 1219913-90-2)
Recommended Standards
- [1-(3,4-Dichlorophenyl)-1H-1,2,3-triazol-4-yl]methyl N-phenylcarbamate (CAS 338419-30-0)
- 2-Bromo-1,3-bis(2-methoxyphenyl)propane-1,3-dione (CAS 937602-32-9)
- (1-(4-Chlorophenyl)-1H-1,2,3-triazol-4-yl)methyl (4-chlorophenyl)carbamate (CAS 338419-14-0)
- 2-Bromo-1,3-bis(3-methoxyphenyl)propane-1,3-dione (CAS 832738-09-7)
- 2-(3-Methoxyphenyl)-1-{4-[6-(trifluoromethyl)pyrimidin-4-yl]piperazin-1-yl}ethan-1-one (CAS 1775526-93-6)
- 6-Bromo-2-fluoro-3-(trifluoromethyl)benzamide (CAS 1352719-16-4)
- (S)-6-(3-Methylpiperazin-1-yl)nicotinonitrile (CAS 1057682-03-7)
- Upadacitinib Impurity 180 (CAS CATO-C4X-2405180)
- 5-Methyl-2-(2-oxo-2-phenylethyl)-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one (CAS 1032394-06-1)
- O-Methyl (4-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)benzyl)carbamothioate (CAS 147821-57-6)
- 1-(4-Formylphenyl)azetidine-3-carboxylic acid (CAS 1355248-05-3)
- 3-(7-Chloro-2-methyl-1H-indol-3-yl)propan-1-amine hydrochloride (CAS 1956379-37-5)
- Ethyl 1-(3,4-dichlorophenyl)-4,5-dihydro-1H-furo[2,3-c]pyrazole-3-carboxylate (CAS 1245080-11-8)
- Peptide Impurity 09 X TFA Salt (CAS CATO-CPTD788809)
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