Methyl 9-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-8-methoxy-2-oxo-2H-benzo[g]chromene-3-carboxylate CAS 168639-87-0
| CAS No. | 168639-87-0 |
| Molecular Formula | C20H13NO7 |
| Molecular Weight | 379.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 9-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-8-methoxy-2-oxo-2H-benzo[g]chromene-3-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Methyl 9-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-8-methoxy-2-oxo-2H-benzo[g]chromene-3-carboxylate (CAS 168639-87-0), a certified reference material (molecular formula C20H13NO7, MW 379.32 g/mol) for analytical method development and quality control.
The molecular framework of Methyl 9-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-8-methoxy-2-oxo-2H-benzo[g]chromene-3-carboxylate (C20H13NO7) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Methyl 9-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-8-methoxy-2-oxo-2H-benzo[g]chromene-3-carboxylate 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.
Physical & Chemical Properties
| Molecular Formula | C20H13NO7 |
| Molecular Weight | 379.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- Benzyl 2,4-dioxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate (CAS 1219970-04-3)
- 3-[[3,4-Dioxo-2-[[(1S)-1-phenylethyl]amino]-1-cyclobuten-1-yl]amino]-2-hydroxy-N,N-dimethylbenzamide (CAS 473725-26-7)
- 4-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-nonylbenzenesulfonamide (CAS 61633-10-1)
- 3,3'-((9,10-Dioxo-9,10-dihydroanthracene-1,4-diyl)bis(azanediyl))dibutanal (CAS 89734-95-2)
- 3,3'-((9,10-Dioxo-9,10-dihydroanthracene-1,5-diyl)bis(azanediyl))dibutanal (CAS 89734-96-3)
- 3,3'-((9,10-Dioxo-9,10-dihydroanthracene-1,8-diyl)bis(azanediyl))dibutanal (CAS 89734-97-4)
- N-(1,4-dioxo-3-(pyrazin-2-ylmethylamino)-1,4-dihydronaphthalen-2-yl)-N-(2-methoxyethyl)acetamide (CAS 355405-02-6)
- Ethyl 2-((12,14-dioxo-9,10-dihydro-9,10-[3,4]epipyrroloanthracen-13-yl)oxy)acetate (CAS 478029-57-1)
Recommended Standards
- 4-(Methylsulfonyl)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperidine (CAS 1404309-71-2)
- (SP-4-2)-[[2,2′-[1,2-Cyclohexanediylbis[(nitrilo-κN)methylidyne]]bis[phenolato-κO]](2-)]cobalt (CAS 530087-31-1)
- ThioGlo1 (CAS 137350-66-4)
- 1-Acetyl-2'-amino-6'-(hydroxymethyl)-2,8'-dioxo-1,2-dihydro-8'H-spiro[indole-3,4'-pyrano[3,2-b]pyran]-3'-carbonitrile (CAS 939893-52-4)
- Anhydrotuberosin (CAS 41347-49-3)
- 11-(4-Chlorophenyl)-5,11,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-8(6H)-one (CAS 339012-00-9)
- Fmoc-4-trifluoromethyl-L-homophenylalanine (CAS 1260591-49-8)
- 2-Acetoxybenzonitrile (CAS 5715-02-6)
- 3-Fluoro-4-[(morpholin-4-yl)carbonyl]phenol (CAS 672946-50-8)
- 2-(Cyanomethyl)-4,5-difluorobenzimidazole (CAS 1500714-70-4)
- 5-(Chlorodifluoromethyl)-1-(4-chlorophenyl)-3-methyl-1H-pyrazole (CAS 321998-13-4)
- 4-Cyclohexyl-1-tosyl-1H-indole (CAS 129667-02-3)
- (1R,6S)-6-Aminocyclohex-3-enecarboxylic acid hydrochloride (CAS 795309-09-0)
- Anxiety Peptide (CAS 95237-86-8)
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