Tamoxifen EP Impurity B CAS 748-97-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 748-97-0 |
| Molecular Formula | C26H31NO2 |
| Molecular Weight | 389.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Tamoxifen EP Impurity B (CAS 748-97-0), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C26H31NO2. Molecular weight: 389.53 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C26H31NO2 |
| Molecular Weight | 389.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Tamoxifen Standards
- Tamoxifen N-Oxide (CAS 75504-34-6)
- Tamoxifen impurity 19 (CAS CATO-C4X-123319)
- Tamoxifen Impurity 15 (CAS 157698-32-3)
- Tamoxifen Citrate Impurity 25 (CAS 114828-90-9)
- Tamoxifen 2-Isomer (CAS 7728-73-6)
- Tamoxifen EP Impurity A (CAS 13002-65-8)
- Tamoxifen Impurity 29 (CAS CATO-C4X-123329)
- Tamoxifen EP Impurity E (Mixture of Z and E Isomers) (CAS CATO-C4X-12336)
Recommended Standards
- Mifepristone Impurity 11 (CAS CATO-C4X-121611)
- Atomoxetine Impurity 46 (CAS CATO-C4X-155046)
- Terbutaline impurity 105 (CAS CATO-C4X-1183105)
- Tacrolimus impurity 71 (CAS CATO-C4X-130071)
- Osimertinib Impurity 109 (CAS CATO-C4X-2045109)
- Ethyl 2-oxo-2-(o-tolyl)acetate (CAS 66644-67-5)
- 448376BFQC 673-32-5 1-Phenyl-1-propyne Prop-1-ynylbenzene EINECS 211-607-7 UNII-448376BFQC (CAS 673-32-5)
- (5-(Butylcarbamoyl)-2-chlorophenyl)boronic acid (CAS 2096336-21-7)
- 2,3-Dimethyl-1,3,8-triazaspiro[4.5]Dec-1-en-4-one hydrochloride (CAS 1774899-05-6)
- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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