Arotinolol Impurity 11 CAS 68257-90-9
| CAS No. | 68257-90-9 |
| Molecular Formula | C7H6BrNO2S |
| Molecular Weight | 248.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Arotinolol Impurity 11 (CAS 68257-90-9), a pharmacopoeial impurity reference standard (molecular formula C7H6BrNO2S, MW 248.10 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Arotinolol Impurity 11 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 248.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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.
Physical & Chemical Properties
| Molecular Formula | C7H6BrNO2S |
| Molecular Weight | 248.10 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Arotinolol Standards
- Arotinolol impurity 25 (CAS 96991-65-0)
- Arotinolol impurity 26 (CAS 96991-51-4)
- Arotinolol Impurity 67 (CAS CATO-C4X-185467)
- Arotinolol Impurity 10 (CAS CATO-C4X-185410)
- Arotinolol intermediate product 8 (CAS 52560-89-1)
- Arotinolol Impurity 36 (CAS 52561-15-6)
- Arotinolol Impurity 76 (CAS CATO-C4X-185476)
- Arotinolol Impurity 42 (CAS 57797-77-0)
Recommended Standards
- Edoxaban Impurity 112 (CAS CATO-C4X-1063112)
- Tert-butyl 5,6-dichloropyridine-3-carboxylate (CAS 1011476-27-9)
- 931320-77-3 1-(5-Bromo-1,3,4-thiadiazol-2-yl)pyrrolidin-2-one MFCD14281997 (CAS 931320-77-3)
- tert-Butyl 2,6-dichloronicotinate (CAS 1013647-75-0)
- Alverine Impurity 18 HCl (CAS CATO-C4X-153918)
- Eplerenone EP Impurity B (CAS 192704-82-8)
- Avatrombopag Impurity 11 (CAS CATO-C4X-223411)
- 6-(Hydroxymethyl)-4-phenylchroman-2-ol (CAS 959624-24-9)
- 2-Amino-1-biphenyl-4-ylethanone hydrochloride (CAS 71350-68-0)
- Ethyl 4-(2-hydroxyphenyl)butanoate (CAS 20921-17-9)
- 2-(4-Chlorophenyl)-5-(3,4-dichlorobenzoyl)-1,3-thiazole (CAS 339007-99-7)
- 4-Chloro-2-(ethylthio)-6-methylpyrimidine (CAS 22727-18-0)
- Caspofungin EP Impurity A Acetate (CAS 1202167-57-4(Free Base))
- (D-Ala1)-Peptide T amide (CAS 106362-34-9)
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