Montelukast Impurity 48 CAS 87764-54-3
| CAS No. | 87764-54-3 |
| Molecular Formula | C6H5NO3S |
| Molecular Weight | 171.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Montelukast Impurity 48 (C6H5NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 171.17 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Montelukast Impurity 48 (CAS 87764-54-3), a pharmacopoeial impurity reference standard (molecular formula C6H5NO3S, MW 171.17 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Montelukast Impurity 48 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H5NO3S |
| Molecular Weight | 171.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Montelukast Standards
- Montelukast Impurity 21 (CAS 152922-72-0)
- Montelukast Impurity N6 (CAS 66-40-0)
- Montelukast Impurity 55 (CAS 152922-86-6)
- Montelukast Impurity 54 (CAS 89729-09-9)
- Montelukast Impurity 39 (CAS 769-28-8)
- Montelukast Impurity 34 (CAS 162515-68-6)
- Montelukast Impurity N4 (CAS 855473-50-6)
- Montelukast Impurity 57 (CAS 30220-25-8)
Recommended Standards
- 317-20-4 7-FLUORO-1H-INDOLE-2,3-DIONE 7-FLUORO-2,3-INDOLINEDIONE 7-FLUOROINDOLE-1H-2,3-DIONE 7-FLUOROINDOLE-2,3-DIONE 7-FLUOROINDOLINE-2,3-DIONE 7-FLUOROISATINE 7-FLUOROMETHYLISATIN 7-Fluoroisatin AS02428 BUTTPARK 24\07-37 OTAVA-BB 1217730 (CAS 317-20-4)
- Rtitrexed Impurity 21 (CAS CATO-C4X-138621)
- 1,3-DIFLUORO-5-ISOTHIOCYANATOBENZENE 3,5-Difluorophenyl isothiocyanate 302912-39-6 AKOS JY2072175 AS00363 TOSLAB 876253 (CAS 302912-39-6)
- Temozolomide Metabolite-MTIC-d3 (CAS 1185242-69-6)
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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