4-(4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperazin-1-yl)-2-(pyridin-3-yl)quinazoline CAS 851185-20-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 851185-20-1 |
| Molecular Formula | C25H23N5O4S |
| Molecular Weight | 489.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperazin-1-yl)-2-(pyridin-3-yl)quinazoline (CAS 851185-20-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C25H23N5O4S. Molecular weight: 489.55 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C25H23N5O4S |
| Molecular Weight | 489.55 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Dihydrobenzo Standards
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((4-(4-ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477330-75-9)
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((1-(4-fluorobenzyl)-1H-indol-3-yl)sulfonyl)acetamide (CAS 686744-12-7)
- N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-((3-methyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1111292-29-5)
- N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-((3-methyl-4-oxo-7-phenyl-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040682-14-1)
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((5-((4-methoxybenzyl)thio)-1,3,4-thiadiazol-2-yl)thio)acetamide (CAS 499103-68-3)
- 3-((2,3-Dihydrobenzo[b][1,4]dioxine)-6-sulfonamido)-N-(2-oxo-2-(piperidin-1-yl)ethyl)benzamide (CAS 1111446-79-7)
- 1-(4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperazin-1-yl)-2-(6-methylbenzofuran-3-yl)ethan-1-one (CAS 847939-23-5)
- 1-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)-4-((4-methoxyphenyl)sulfonyl)piperazine (CAS 562867-96-3)
Recommended Standards
- N-((1R,2R)-2-(3-(3,5-Bis(trifluoromethyl)phenyl)thioureido)cyclohexyl)-2-methylpropane-2-sulfinamide (CAS 959979-36-3)
- 4-Hydroxy Duloxetine B-D-Glucuronide (CAS 741693-83-4)
- Vardenafil Impurity 35 (CAS CATO-C4X-101735)
- 7-Bromo-benzooxazole-2-carboxylic acid (CAS 944898-67-3)
- n-[(dimethyl-1,2-oxazol-4-yl)methyl]-n-methylcyclopentanamine (CAS 1258693-65-0)
- Pivmecillinam Impurity 5 (CAS 64527-05-5)
- 4-Methyl-6-phenyl-3-(m-tolylsulfonyl)pyridin-2(1H)-one (CAS 321431-40-7)
- 2-Amino-N-(2-(methylamino)-2-oxoethyl)acetamide (CAS 92235-99-9)
- 5-ethynyl-1,4-dimethyl-pyrazole (CAS 1865506-49-5)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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 13829788188 / jacky.chen@cato-chem.com