1-(4-Chlorophenyl)-3-[(3R,4R)-3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methylurea CAS 318951-56-3
| CAS No. | 318951-56-3 |
| Molecular Formula | C19H21ClN2O4 |
| Molecular Weight | 376.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 376.83 g/mol gives 1-(4-Chlorophenyl)-3-[(3R,4R)-3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methylurea distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(4-Chlorophenyl)-3-[(3R,4R)-3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methylurea (CAS 318951-56-3) is a high-purity analytical reference standard with the molecular formula C19H21ClN2O4 and a molecular weight of 376.83 g/mol.
1-(4-Chlorophenyl)-3-[(3R,4R)-3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methylurea (C19H21ClN2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1-(4-Chlorophenyl)-3-[(3R,4R)-3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methylurea 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.
Physical & Chemical Properties
| Molecular Formula | C19H21ClN2O4 |
| Molecular Weight | 376.83 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- [(2-{[2-(3-Chlorophenyl)ethyl]amino}-2-oxoethyl)-(4-methoxyphenyl)amino]acetic acid (CAS 1142204-29-2)
- 4-[(2E)-3-(3-Chlorophenyl)prop-2-enoyl]phenyl 4-methylbenzoate (CAS 329777-47-1)
- 4-[3-(4-Chlorophenyl)-3-oxo-1-propenyl]phenyl 2-phenylacetate (CAS 331460-85-6)
- (3E)-1-[(4-Chlorophenyl)methyl]-3-[(4-methoxyphenyl)imino]-2,3-dihydro-1H-indol-2-one (CAS 478031-80-0)
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- N-((4-(3-Chlorophenyl)-5-(methylthio)-4H-1,2,4-triazol-3-yl)methyl)-3-fluorobenzamide (CAS 391899-74-4)
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Recommended Standards
- Glafenine-d4 (CAS 1794783-64-4)
- 1142204-44-1 9301AC C19H21ClN2O4 [(2-{[2-(4-Chlorophenyl)ethyl]amino}-2-oxoethyl)-(4-methoxyphenyl)amino]acetic acid (CAS 1142204-44-1)
- 1142204-34-9 9296AC C19H21ClN2O4 [(2-{[2-(2-Chlorophenyl)ethyl]amino}-2-oxoethyl)-(4-methoxyphenyl)amino]acetic acid (CAS 1142204-34-9)
- n-[4-(2-chloroacetamido)-2,5-diethoxyphenyl]benzamide (CAS 858081-17-1)
- (2,5-dimethylphenyl)(phenyl)methanamine hydrochloride (CAS 1796948-30-5)
- 4-Oxo-6-((pyrimidin-2-ylthio)methyl)-4H-pyran-3-yl 4-methoxybenzoate (CAS 877635-49-9)
- 3,5-Difluoro-alpha-(trifluoromethyl)benzyl Alcohol (CAS 923690-98-6)
- 5-Azaindole-2-carboxylic acid, 97% (CAS 800401-65-4)
- (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-((4-methyl-2-oxo-2H-chromen-7-yl)amino)-4-oxobutanoic acid (CAS 238084-15-6)
- N,N-diethyl-2-(phenylsulfonyl)acetamide (CAS 163019-28-1)
- 1-[3-(1,3-benzodioxol-5-yl)-1,2,4-oxadiazol-5-yl]acetone (CAS 1000932-94-4)
- 9-(5-(3-(9H-Carbazol-9-yl)phenyl)pyridin-3-yl)-9H-carbazole (CAS 1583238-16-7)
- Methyl 3-chloro-4,5-dihydroxybenzoate (CAS 132496-77-6)
- Neuropeptide Y (porcine) trifluoroacetate salt (CAS 83589-17-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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