18,19-Dimethoxy-6-[1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl]-4,5,9,13-tetraazapentacyclo[11.8.0.0^{3,11}.0^{4,8}.0^{16,21}]henicosa-3(11),5,7,9,16(21),17,19-heptaen-12-one CAS 956755-40-1
| CAS No. | 956755-40-1 |
| Molecular Formula | C24H21F3N6O3 |
| Molecular Weight | 498.46 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.
18,19-Dimethoxy-6-[1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl]-4,5,9,13-tetraazapentacyclo[11.8.0.0^{3,11}.0^{4,8}.0^{16,21}]henicosa-3(11),5,7,9,16(21),17,19-heptaen-12-one (CAS 956755-40-1) is a high-purity analytical reference standard with the molecular formula C24H21F3N6O3 and a molecular weight of 498.46 g/mol.
Based on its molecular formula C24H21F3N6O3, 18,19-Dimethoxy-6-[1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl]-4,5,9,13-tetraazapentacyclo[11.8.0.0^{3,11}.0^{4,8}.0^{16,21}]henicosa-3(11),5,7,9,16(21),17,19-heptaen-12-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 498.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 18,19-Dimethoxy-6-[1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl]-4,5,9,13-tetraazapentacyclo[11.8.0.0^{3,11}.0^{4,8}.0^{16,21}]henicosa-3(11),5,7,9,16(21),17,19-heptaen-12-one 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 | C24H21F3N6O3 |
| Molecular Weight | 498.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
Related Dimethoxy Standards
- 1-{3-[(6,7-Dimethoxy-1-methyl-3,4-dihydroisoquinolin-2(1H)-yl)-methyl]-4-methoxyphenyl}-2,3,4,9-tetrahydro-1H-beta-carboline (CAS 312922-14-8)
- 1-(4-((6,7-Dimethoxy-3,4-dihydroisoquinolin-1-yl)methyl)phenyl)-3-(4-(trifluoromethoxy)phenyl)urea (CAS 1023493-40-4)
- 1-(4-((6,7-Dimethoxy-3,4-dihydroisoquinolin-1-yl)methyl)phenyl)-3-(2-(trifluoromethoxy)phenyl)urea (CAS 1024431-81-9)
- 10R-0297 6,7-dimethoxy-3-(2-phenylethyl)-2-({[4-(trifluoromethyl)phenyl]methyl}sulfanyl)-3,4-dihydroquinazolin-4-imine 691858-06-7 (CAS 691858-06-7)
- 2,2-Dimethoxy-2-phenylethanol (CAS 28203-05-6)
- 6,7-Dimethoxy-1-((2-methoxyphenoxy)methyl)-N-(3-methoxyphenyl)-3,4-dihydroisoquinoline-2(1H)-carbothioamide (CAS 443101-88-0)
- rac 2,4-Dimethoxy-6-[[(trifluoromethyl)sulfonyl]oxy]benzoic Acid 1-Methyl-5-oxo-9-decen-1-yl Ester-d6 (CAS 1246815-12-2)
- 2,3-Dimethoxy-5-iodo-N-((1-(4'-fluorobenzyl)-2-pyrrolidinyl)methyl)benzamide (CAS 124929-08-4)
Recommended Standards
- 4-((6-(Dimethylamino)-1-(4-fluorophenyl)-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-1,2-phenylene diacetate (CAS 176379-21-8)
- 5-((3-(4-Bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-3-(sec-butyl)-2-thioxothiazolidin-4-one (CAS 623933-14-2)
- 4,4'-((2,3,5,6-Tetramethylphenyl)boranediyl)bis(2,3,5,6-tetramethylbenzoicacid) (CAS 1631143-54-8)
- N-(3,5-bis(trifluoromethyl)benzyl)-7,9-dimethyl-N-(2-methyl-2H-tetrazol-5-yl)-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-amine (CAS 1539285-92-1)
- [[(1-methyl-1H-pyrazol-4-yl)methylidene]amino]thiourea (CAS 1193390-69-0)
- (2-Cyclopropoxy-4-methylphenyl)methanamine (CAS 1243382-12-8)
- 4-Cyanonicotinamide (CAS 3423-44-7)
- 3-(3-Chlorophenyl)-1-(2-(methylthio)phenyl)propan-1-one (CAS 898762-47-5)
- 3-Nitro-4-piperidin-1-ylbenzonitrile (CAS 32117-03-6)
- 2-(Difluoromethoxy)-4-iodonitrobenzene (CAS 1261440-42-9)
- tert-butyl 1-ethynyl-3-azabicyclo[3.1.0]hexane-3-carboxylate (CAS 1936077-76-7)
- Methyl 5-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 866216-24-2)
- Crisaborole impurity 110 (CAS CATO-C4X-2021110)
- KALA Amphipathic Peptide (CAS 187987-64-0)
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