Atovaquone EP Impurity B (RC A) CAS 137732-39-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 137732-39-9 |
| Molecular Formula | C22H19ClO3 |
| Molecular Weight | 366.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Atovaquone EP Impurity B (RC A) (CAS 137732-39-9) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C22H19ClO3. Molecular weight: 366.84 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C22H19ClO3 |
| Molecular Weight | 366.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
Related Atovaquone Standards
- Atovaquone (CAS 95233-18-4)
- Atovaquone EP Impurity A (CAS 2517583-91-2)
- Atovaquone EP Impurity C (CAS 1809464-27-4)
- cis-Atovaquone-d5 (contains 10% trans isomer) (CAS 1217612-80-0)
- Atovaquone-d5 (CAS 1329792-63-3)
- Atovaquone EP Impurity D (CAS 129700-41-0)
- Atovaquone Impurity 9 (CAS 1100053-58-4)
- Atovaquone Impurity 1 (CAS 49708-81-8)
Recommended Standards
- 2-Chloro-4-[4-(1-naphthyl)phenyl]quinazoline (CAS 1373265-62-3)
- 1-(2,4-Bis(benzyloxy)-5-chlorophenyl)ethanone (CAS 705963-54-8)
- 4-(4-Chlorobenzoyl)-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326809-93-1)
- (R)-(-)-Ketoprofen-13C,d3 (CAS 1329496-52-7)
- 2-Amino-3-(benzo[d][1,3]dioxol-5-yl)propanoic acid (CAS 33522-63-3)
- (Perfluoropropane-2,2-diyl)bis(4,1-phenylene) diacrylate (CAS 108050-41-5)
- 1,1,3,5-Tetramethylcyclohexane (CAS 4306-65-4)
- Ropivacaine EP Impurity G ((R)-Ropivacaine) (CAS 98717-16-9)
- 4-(Pyridin-3-yl)thiazole (CAS 162704-76-9)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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