1-(3-Chloro-4-methylphenyl)-5-(4-hydroxy-3,5-dimethoxybenzylidene)pyrimidine-2,4,6(1H,3H,5H)-trione CAS 690965-40-3
| CAS No. | 690965-40-3 |
| Molecular Formula | C20H17ClN2O6 |
| Molecular Weight | 416.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(3-Chloro-4-methylphenyl)-5-(4-hydroxy-3,5-dimethoxybenzylidene)pyrimidine-2,4,6(1H,3H,5H)-trione (CAS 690965-40-3) is a high-purity analytical reference standard with the molecular formula C20H17ClN2O6 and a molecular weight of 416.81 g/mol.
Structurally, 1-(3-Chloro-4-methylphenyl)-5-(4-hydroxy-3,5-dimethoxybenzylidene)pyrimidine-2,4,6(1H,3H,5H)-trione (C20H17ClN2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 416.81 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C20H17ClN2O6 |
| Molecular Weight | 416.81 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N-[(pyridin-3-yl)methyl]-1H-pyrrole-2-sulfonamide (CAS 338406-64-7)
- 4-((3-(2-Chloro-4-nitrophenoxy)propyl)carbamoyl)benzene-1-sulfonyl fluoride (CAS 25313-25-1)
- 4-(4-(2-Chloro-4-nitrophenoxy)butanamido)benzene-1-sulfonyl fluoride (CAS 30885-83-7)
- 4-Chloro-N'-methyl-N'-(2-(trifluoromethyl)quinazolin-4-yl)benzenesulfonohydrazide (CAS 320421-96-3)
- 4-Chloro-N'-methyl-N'-(3-(trifluoromethyl)quinoxalin-2-yl)benzenesulfonohydrazide (CAS 343372-57-6)
- 5-[(2-Chloro-6-fluorophenyl)methyl]-7-(trifluoromethyl)-1H,3H,3aH,4H,5H-[1,3]thiazolo[3,4-a]quinoxalin-4-one (CAS 1031223-80-9)
- 6-Chloro-2-(p-tolyl)-1-((3-(trifluoromethyl)benzyl)oxy)-1H-benzo[d]imidazole (CAS 282523-51-7)
- 2-(5-Chloro-1'-(2-fluorobenzyl)-2,2',5'-trioxospiro[indoline-3,3'-pyrrolidin]-1-yl)acetic acid (CAS 916046-55-4)
Recommended Standards
- Resmetirom Impurity 25 (CAS CATO-C4X-291225)
- N-(4-chlorophenyl)-3-phenyl-6-(trifluoromethyl)-1H-pyrazolo[4,3-b]pyridine-1-carboxamide (CAS 251307-17-2)
- N-(2-((4-bromophenyl)thio)ethyl)-2-((2-chlorophenyl)thio)acetamide (CAS 337923-59-8)
- 5-[(1Z)-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]hydrazin-1-ylidene}methyl]-3-phenyl-2,1-benzoxazole (CAS 344276-26-2)
- 2,5-diazatricyclo[6.2.1.0²,⁷]undecane (CAS 1824069-86-4)
- 2-((5-(3-(Thiophen-2-yl)ureido)-1,3,4-thiadiazol-2-yl)thio)acetamide (CAS 1002043-11-9)
- 1,1′-bis[(11bR)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl]-Ferrocene (CAS 217175-10-5)
- 1-(Dimethylamino)-3-Pentanone (CAS 22104-65-0)
- 2-Methoxypyridin-3-ol (CAS 13472-83-8)
- (R)-1-(3-(1,1-Difluoroethyl)phenyl)ethan-1-amine hydrochloride (CAS 2569698-48-0)
- [(5-Ethyl-4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)thio]acetic acid (CAS 347343-04-8)
- Adamantane-2,6-diol (CAS 25106-97-2)
- 4-Carboethoxy-3-(3,4-dimethylphenyl)propiophenone (CAS 898779-05-0)
- (DTyr27,36,DThr32)-Neuropeptide Y (27-36) (CAS 163887-48-7)
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