1,1'-(1,3-Phenylenebis(methylene))bis(3-methyl-1H-pyrrole-2,5-dione) CAS 119462-56-5
| CAS No. | 119462-56-5 |
| Molecular Formula | C18H18N2O5 |
| Molecular Weight | 342.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1,1'-(1,3-Phenylenebis(methylene))bis(3-methyl-1H-pyrrole-2,5-dione) 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.
1,1'-(1,3-Phenylenebis(methylene))bis(3-methyl-1H-pyrrole-2,5-dione) (CAS 119462-56-5), molecular formula C18H18N2O5 and molecular weight 342.35 g/mol, is a CATO reference standard with documented purity and traceability.
1,1'-(1,3-Phenylenebis(methylene))bis(3-methyl-1H-pyrrole-2,5-dione) (C18H18N2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C18H18N2O5 |
| Molecular Weight | 342.35 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 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
Related Phenylenebis Standards
- 2,2',2'',2'''-(1,4-Phenylenebis(azanetriyl))tetraacetic acid (CAS 1099-02-1)
- 2,2',2'',2'''-(1,2-Phenylenebis(azanetriyl))tetraacetic acid (CAS 40774-59-2)
- 4,4'-(1,3-Phenylenebis(diazene-2,1-diyl))bis(benzene-1,3-diamine) (CAS 1052-38-6)
- 4,4'-((1,4-Phenylenebis(methylene))bis(oxy))dibenzaldehyde (CAS 64621-41-6)
- 4,4'-(1,4-Phenylenebis(oxy))dibenzoic acid (CAS 13282-09-2)
- 4,4'-(1,2-Phenylenebis(oxy))dibenzoic acid (CAS 74294-25-0)
- 4,4'-(1,3-Phenylenebis(oxy))dibenzoic acid (CAS 77865-43-1)
- 4,4'-(1,4-Phenylenebis(ethyne-2,1-diyl))dibenzaldehyde (CAS 192188-70-8)
Recommended Standards
- N-(5-amino-9,10-dioxo-9,10-dihydroanthracen-1-yl)benzamide (CAS 117-06-6)
- 3-((2-Amino-4,6-dimethoxyphenyl)(pyridin-3-yl)methyl)-4-hydroxyfuran-2(5H)-one (CAS 1272756-36-1)
- 4-(1H-Imidazo[4,5-b]phenazin-2-yl)-2-methoxyphenol (CAS 114991-90-1)
- 2-(6,6-Dimethyl-1-(4-nitrophenyl)-4-oxo-4,5,6,7-tetrahydro-1H-indol-2-yl)acetic acid (CAS 1355233-88-3)
- 5-Methyl-2-pyrrol-1-yl-thiophene-3-carboxylic acid (CAS 151258-67-2)
- N-(3-Cyano-4,5-dimethylthiophen-2-yl)-3,4-difluorobenzamide (CAS 1043320-52-0)
- 2-Mercapto-5,7-dimethylquinoline-3-carbonitrile (CAS 917750-53-9)
- 2-[3-(6-Dimethylamino-4-trifluoromethyl-pyridin-2-yl)-phenoxy]-propionic acid ethyl ester (CAS 1311279-99-8)
- 4-(3-Methyl-1,2,4-oxadiazol-5-yl)cyclohexan-1-amine hydrochloride (CAS 1384430-79-8)
- 2-(3-Amino-4-methyl-1h-pyrazol-1-yl)-N,N-dimethylacetamide (CAS 1342614-59-8)
- 6-Benzyl-3-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 80030-90-6)
- 4'-Butyl-[1,1'-biphenyl]-4-carboxylic acid (CAS 59662-46-3)
- Carnidazole (CAS 42116-76-7)
- Semaglutide impurity 97 (CAS CATO-C4X-222697)
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