Raloxifene Impurity 29 CAS 68574-35-6
| CAS No. | 68574-35-6 |
| Molecular Formula | C7H7BrO3S |
| Molecular Weight | 251.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Raloxifene Impurity 29 (CAS 68574-35-6), a pharmacopoeial impurity reference standard (molecular formula C7H7BrO3S, MW 251.10 g/mol) used for the identification and quantification of trace impurities in APIs.
Raloxifene Impurity 29 (C7H7BrO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H7BrO3S |
| Molecular Weight | 251.10 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Raloxifene Standards
- Raloxifene Impurity 19 (CAS 937666-17-6)
- Raloxifene Impurity 8 (CAS 225648-21-5)
- Raloxifene Impurity 2 (CAS 63676-22-2)
- Raloxifene Impurity 20 (CAS 767286-87-3)
- Raloxifene Impurity 21 (CAS 90433-54-8)
- Raloxifene Impurity 7 (CAS 63675-74-1)
- Raloxifene Impurity 31 (CAS 63762-93-6)
- Raloxifene Impurity N65 (CAS 63675-73-0)
Recommended Standards
- N-(5-bromopyridin-2-yl)methanesulfonamide (CAS 89466-22-8)
- 6-iodo-2,3-dihydro-1H-indole (CAS 115666-46-1)
- N-(4-bromophenyl)aminosulfonamide (CAS 556068-14-5)
- 2,4-Dichloro-[1,1'-biphenyl]-3-carbaldehyde (CAS 1175949-53-7)
- Amlodipine Impurity 145 fumarate (CAS 88150-53-2)
- Esomeprazole impurity 132 (CAS CATO-C4X-1112132)
- Esomeprazole EP Impurity D (CAS 88546-55-8)
- 6-Methylisoxazolo[5,4-d]pyrimidin-3-amine (CAS 1171935-86-6)
- 3-(Aminomethyl)-4-methoxy-6-methylpyridin-2(1H)-one (CAS 1438382-15-0)
- 2,4-Dichloro-6,7-dihydroquinazolin-8(5H)-one (CAS 1823330-44-4)
- 2,6-difluorobenzaldehyde oxime (CAS 19064-16-5)
- 6-(3,5-Difluorophenyl)-2-methylpyrimidin-4-ol (CAS 1690654-47-7)
- N-(2-Bromophenyl)-5-chloro-2-methoxybenzamide (CAS 349538-99-4)
- Tau Peptide (294-305) (human) trifluoroacetate salt (CAS 1428135-29-8)
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