3-[3-(1H-Imidazol-1-yl)propyl]-6,7-dimethoxy-2-[(2-methylpropyl)sulfanyl]-3,4-dihydroquinazolin-4-imine CAS 691870-01-6
| CAS No. | 691870-01-6 |
| Molecular Formula | C20H27N5O2S |
| Molecular Weight | 401.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-[3-(1H-Imidazol-1-yl)propyl]-6,7-dimethoxy-2-[(2-methylpropyl)sulfanyl]-3,4-dihydroquinazolin-4-imine (CAS 691870-01-6), molecular formula C20H27N5O2S and molecular weight 401.53 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 3-[3-(1H-Imidazol-1-yl)propyl]-6,7-dimethoxy-2-[(2-methylpropyl)sulfanyl]-3,4-dihydroquinazolin-4-imine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 401.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C20H27N5O2S |
| Molecular Weight | 401.53 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related H Standards
- 1-(3-(1h-Imidazol-1-yl)propyl)-4-benzoyl-3-hydroxy-5-(p-tolyl)-1,5-dihydro-2h-pyrrol-2-one (CAS 309270-92-6)
- (4-((1H-Imidazol-1-yl)methyl)phenyl)(3-((4-fluorophenyl)sulfonyl)azetidin-1-yl)methanone (CAS 1797689-29-2)
- 1-(3-(1H-imidazol-1-yl)propyl)-4-benzoyl-5-(4-fluorophenyl)-3-hydroxy-1,5-dihydro-2H-pyrrol-2-one (CAS 350678-63-6)
- 3-(1H-Imidazol-1-yl)-6-(4-(styrylsulfonyl)piperazin-1-yl)pyridazine (CAS 1351664-23-7)
- 3-(1-(3-(1H-Imidazol-1-yl)propyl)-1H-indol-3-yl)-4-(phenylamino)-1H-pyrrole-2,5-dione (CAS 257879-35-9)
- 4-(6-(1H-Imidazol-1-yl)-2-methylpyrimidin-4-yl)-N-(3-ethylphenyl)piperazine-1-carboxamide (CAS 1171764-79-6)
- 1-(1H-Imidazol-1-yl)docosan-1-one (CAS 883835-84-5)
- 4-((3-(1H-imidazol-1-yl)propyl)amino)-3-methyl-1-(p-tolyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid (CAS 866040-31-5)
Recommended Standards
- 1-(tert-Butyl)-2-(2-phenylquinolin-4-yl)-3-(thiazol-2-yl)guanidine (CAS 71079-97-5)
- N-(2-Cyano-3-methylbutan-2-yl)-2-((4-isopropyl-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 745023-50-1)
- 4-Iodo-6-methyl-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride (CAS 1804347-64-5)
- N1-(3-(Diethylamino)propyl)-N2-(2-phenyl-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)oxalamide (CAS 900009-71-4)
- Tert-butyl 6-methoxy-3-methyl-1H-indazole-1-carboxylate (CAS 691900-70-6)
- (Diethoxy(methyl)silyl)methyl methacrylate (CAS 3978-58-3)
- 2-(2-(Methylamino)phenyl)acetonitrile (CAS 88975-25-1)
- Bis-ACV (CAS 69644-78-6)
- Amphoteronolide B (CAS 106799-07-9)
- 5-Chloro-4-methyl-3-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-ol (CAS 2377609-35-1)
- 5-(1-tert-Butyloxycarbonyl-2,3-dihydro-1H-indol-5-yl)-7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 1391053-27-2)
- 5-Bromo-3-(2-methoxyphenyl)-1H-pyrrolo[2,3-b]pyridine (CAS 875639-78-4)
- (2-Phenylethyl)formamide 2-Phenylethylformamide 23069-99-0 N-(2-Phenylethyl)formamide N-(Phenethyl)formamide N-(|A-Phenylethyl)formamide N-Formyl-N-(2-phenylethyl)amine N-Formylphenethylamine N-Phenethylformamide N-|A-Phenethylformamide NSC 18966 (CAS 23069-99-0)
- a-Bag Cell Peptide (1-8) (CAS 87549-53-9)
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