(2E)-2-(4-Bromobenzenesulfonyl)-3-(5,7-dimethyl-4-oxo-4H-chromen-3-yl)prop-2-enenitrile CAS 1025255-71-3
| CAS No. | 1025255-71-3 |
| Molecular Formula | C20H14BrNO4S |
| Molecular Weight | 444.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (2E)-2-(4-Bromobenzenesulfonyl)-3-(5,7-dimethyl-4-oxo-4H-chromen-3-yl)prop-2-enenitrile meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(2E)-2-(4-Bromobenzenesulfonyl)-3-(5,7-dimethyl-4-oxo-4H-chromen-3-yl)prop-2-enenitrile (CAS 1025255-71-3), molecular formula C20H14BrNO4S and molecular weight 444.30 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (2E)-2-(4-Bromobenzenesulfonyl)-3-(5,7-dimethyl-4-oxo-4H-chromen-3-yl)prop-2-enenitrile (C20H14BrNO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 444.30 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H14BrNO4S |
| Molecular Weight | 444.30 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related E Standards
- 1-(4-Bromobenzenesulfonyl)-N-(4-chlorophenyl)pyrrolidine-2-carboxamide (CAS 317377-68-7)
- 1-(4-Bromobenzenesulfonyl)-N-(3,4-difluorophenyl)pyrrolidine-2-carboxamide (CAS 317377-76-7)
- N-[4-(4-Bromobenzenesulfonyl)phenyl]-3-methoxybenzamide (CAS 339031-42-4)
- 1-(4-Bromobenzenesulfonyl)-3-[4-(3-fluoropropoxy)phenyl]-1H-pyrazole (CAS 477711-13-0)
- 2-[4-(4-Bromobenzenesulfonyl)piperazin-1-yl]-1,3-benzothiazole (CAS 478077-05-3)
- 1-(4-Bromobenzenesulfonyl)-4-[5-(trifluoromethyl)pyridin-2-yl]piperazine (CAS 478077-46-2)
- N-[2-(4-Bromobenzenesulfonyl)ethyl]-3-(trifluoromethyl)benzamide (CAS 338956-10-8)
- 2-[4-(4-Bromobenzenesulfonyl)piperazin-1-yl]-4,6-dimethylpyridine-3-carbonitrile (CAS 478081-74-2)
Recommended Standards
- 2-Iodo-N-(1-methylnaphtho[1,2-d]thiazol-2(1H)-ylidene)benzamide (CAS 477501-13-6)
- (2-Bromophenyl)(3-((3-(2-fluorophenyl)-1,2,4-oxadiazol-5-yl)methyl)piperidin-1-yl)methanone (CAS 1705444-18-3)
- 2-((4-Allyl-5-(((4-iodophenyl)amino)methyl)-4H-1,2,4-triazol-3-yl)thio)acetohydrazide (CAS 1306738-91-9)
- Tetrakis(2,4-pentanedionato)titanium(IV) (ca. 63% in Isopropyl Alcohol) (CAS 17501-79-0)
- 1-Azepan-4-yl-1H-pyrazole-4-carboxylic acid amide (CAS 1316218-38-8)
- 5-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methyl}thiophene-2-carbonitrile (CAS 321430-92-6)
- Trastuzumab Impurity 2 (Fmoc-Val-Cit-PAB-OH) (CAS 159858-22-7)
- 2-Amino-4-bromo-6-methylpyridine (CAS 524718-27-2)
- (R)-2-(4-Chlorophenyl)propanoic acid (CAS 105879-62-7)
- 4-Bromo-6-chloro-8-methoxyquinoline (CAS 1189107-33-2)
- 2-(1H-1,2,4-Triazol-3-yl)-1H-isoindole-1,3(2H)-dione (CAS 59208-47-8)
- 2-Amino-4-(pyridin-3-yl)butanoic acid (CAS 99461-41-3)
- [N-[α-[2-(Piperidinoacetamido)phenyl]benzylidene]glycinato]nickel (CAS 847654-17-5)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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