21(S)-Hydroxy Montelukast CAS 184763-29-9
| CAS No. | 184763-29-9 |
| Molecular Formula | C35H36ClNO4S |
| Molecular Weight | 602.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
21(S)-Hydroxy Montelukast (CAS 184763-29-9) is a high-purity analytical reference standard with the molecular formula C35H36ClNO4S and a molecular weight of 602.18 g/mol.
21(S)-Hydroxy Montelukast (C35H36ClNO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 21(S)-Hydroxy Montelukast 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 | C35H36ClNO4S |
| Molecular Weight | 602.18 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
- 2,2'-[4-Hydroxy-4-oxidodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-2,6-diyl]bis[quinoline] (CAS 1429427-21-3)
- 2,2'-[(11bS)-4-Hydroxy-4-oxidodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-2,6-diyl]bis[quinoline] (CAS 1502024-23-8)
- 2-Hydroxy Irinotecan (CAS 1346597-39-4)
- (11bS)-4-Hydroxy-2,6-di(1-naphthyl)dinaphtho[2,1-d:1’,2’-f][1,3,2]dioxaphosphepine 4-Oxide (CAS 929097-93-8)
- (11bS)-4-Hydroxy-2,6-di-2-naphthalenyl-4-oxide-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin (CAS 874948-60-4)
- 8'-Hydroxy Dihydroergotamine (CAS 90650-44-5)
- 4-Hydroxy-2,6-bis(4-nitrophenyl)-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide (CAS 2129645-31-2)
- (R)-4-Hydroxy-2,6-bis(4-nitrophenyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-sulfide (CAS 1706459-42-8)
Recommended Standards
- Montelukast EP Impurity I (CAS 184763-26-6)
- Montelukast 1,2-Diol (Mixture of Diastereomers) (CAS 186352-97-6)
- Montelukast R-Sulfoxide (CAS 1152185-58-4)
- Montelukast - Impurity C (sodium Salt) (CAS 909796-71-0)
- 2,2-Dimethylpentanal (CAS 14250-88-5)
- Hop-17(21)-ene (CAS 546-99-6)
- 2,6-Dimethyl-5-oxo-5,6-dihydro-1,6-naphthyridine-3-carboxylic acid (CAS 1432334-25-2)
- 3-Chloro-2,5-bis(trifluoromethyl)pyridine (CAS 1806500-17-3)
- DG 172 Dihydrochloride (CAS 1361504-77-9)
- N-(3-cyano-4-((3-(trifluoromethyl)phenyl)sulfinyl)phenyl)-3-methoxybenzamide (CAS 477710-04-6)
- 2-(4-(Tert-butyl)-2-methylphenoxy)isonicotinic acid (CAS 1098377-38-8)
- N1,N1-Dimethyl-N2-((5-methylthiophen-2-yl)methyl)ethane-1,2-diamine (CAS 892570-78-4)
- 5,8-Dimethoxy-2,3-dimethylquinoxaline (CAS 19506-22-0)
- Peptide 442 (CAS CATO-CPTD788442)
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