Melphalan Impurity 33 CAS CATO-C4X-198833
| CAS No. | CATO-C4X-198833 |
| Molecular Formula | C23H24Cl2N2O4 |
| Molecular Weight | 463.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Melphalan Impurity 33 (CAS CATO-C4X-198833) is a certified pharmaceutical impurity reference standard with the molecular formula C23H24Cl2N2O4 and a molecular weight of 463.35 g/mol.
Structurally, Melphalan Impurity 33 (C23H24Cl2N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 463.35 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).
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 | C23H24Cl2N2O4 |
| Molecular Weight | 463.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Melphalan Standards
- Melphalan Impurity 35 (CAS CATO-C4X-198835)
- Melphalan Impurity 25 (CAS CATO-C4X-198825)
- Melphalan Impurity 24 (CAS CATO-C4X-198824)
- Melphalan Impurity 26 (CAS CATO-C4X-198826)
- Melphalan Impurity 27 (CAS CATO-C4X-198827)
- Melphalan Flufenamide (CAS 380449-51-4)
- Melphalan Impurity 20 (CAS 97338-02-8)
- Melphalan Impurity 36 (CAS CATO-C4X-198836)
Recommended Standards
- Chloro(crotyl)[di-tert-butyl(4-dimethylaminophenyl)phosphine]palladium(II) (CAS 1334497-06-1)
- RMC6236 Intermediate 27 (CAS CATO-CIM-103915)
- 3-(4-((4-Bromophenyl)sulfonyl)piperazin-1-yl)-6-(3-methyl-1H-pyrazol-1-yl)pyridazine (CAS 1013819-27-6)
- RMC6236 Intermediate 28 (CAS CATO-CIM-103916)
- Prednisone Impurity N56 (CAS 103466-44-0)
- Cytarabine Impurity 25 (CAS CATO-C4X-200525)
- Olmesartan Impurity 75 (CAS 1048948-20-4)
- 1-(3-(Trifluoromethyl)benzyl)guanidine (CAS 14629-14-2)
- tert-Butyl 3,8-diazabicyclo[4.2.0]octane-3-carboxylate hydrochloride (CAS 2007925-05-3)
- Ethyl 2-(6-formylimidazo[1,2-a]pyridin-3-yl)acetate (CAS 1034309-61-9)
- 2-(Chloromethyl)-4-(difluoromethyl)-6-iodopyridine-3-carboxylic acid (CAS 1805610-76-7)
- 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-, polymer with ethenylbenzene (CAS 36704-23-1)
- 3-Acetyl-4-methoxyoxazolidin-2-one (CAS 120224-27-3)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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