Montelukast Impurity 2 CAS CATO-C4X-10312
| CAS No. | CATO-C4X-10312 |
| Molecular Formula | C35H34ClNO3S |
| Molecular Weight | 584.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Montelukast Impurity 2 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Montelukast Impurity 2 (CAS CATO-C4X-10312) is a certified pharmaceutical impurity reference standard with the molecular formula C35H34ClNO3S and a molecular weight of 584.17 g/mol.
The molecular framework of Montelukast Impurity 2 (C35H34ClNO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Montelukast Impurity 2 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C35H34ClNO3S |
| Molecular Weight | 584.17 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Montelukast Standards
- Montelukast Amide (CAS 866923-63-9)
- Montelukast EP Impurity H (CAS 851755-56-1)
- Montelukast Impurity 24 (CAS CATO-C4X-103124)
- Montelukast (CAS 158966-92-8)
- Montelukast EP Impurity A (CAS 220927-27-5)
- Montelukast EP Impurity G (CAS 774538-96-4)
- Montelukast Impurity N1 (CAS 162489-70-5)
- Montelukast Impurity 21 (CAS 142147-67-9)
Recommended Standards
- N-(3,5-dichlorophenyl)-2-(1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexyl)benzamide (CAS 680213-70-1)
- Diethyl (1H,1H,2H,2H-heptadecafluorodec-1-yl)phosphonate (CAS 90146-96-6)
- 1-[[3,5-Bis(trifluoromethyl)phenyl]diselanyl]-3,5-bis(trifluoromethyl)benzene (CAS 335383-23-8)
- Chloro 2,3,5-Tri-O-p-chlorobenzoyl-α-D-ribofuranoside (CAS 125598-74-5)
- Cefmetazole Impurity 69 (CAS CATO-C4X-150769)
- oceprevir Impurity 14 (CAS CATO-C4X-252514)
- Ritonavir EP Impurity E (CAS 176655-56-4)
- 1,1'-Carbonylbis(3-methyl-1H-imidazol-3-ium) trifluoromethanesulfonate (CAS 120418-31-7)
- n-Ethyl-2,3-dimethylaniline (CAS 41115-23-5)
- (R)-3-(azetidin-2-yl)propanoic acid (CAS 477585-77-6)
- (9-Phenyl-9H-purin-6-yl)-phenylamine (CAS 70386-27-5)
- 2-Thiomethyl-4-thiomorpholinomethyl benzophenone (CAS 898782-55-3)
- 2-(2-(9h-Carbazol-9-yl)ethyl)-1,3,6,2-dioxazaborocane (CAS 501014-45-5)
- Retatrutide (CAS 2381089-83-2)
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