2-((3,5-Difluoro-4-hydroxyphenyl)amino)-8-isopentyl-5,7-dimethyl-7,8-dihydropteridin-6(5H)-one CAS 501437-28-1
| CAS No. | 501437-28-1 |
| Molecular Formula | C19H23F2N5O2 |
| Molecular Weight | 391.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H23F2N5O2, 2-((3,5-Difluoro-4-hydroxyphenyl)amino)-8-isopentyl-5,7-dimethyl-7,8-dihydropteridin-6(5H)-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 391.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-((3,5-Difluoro-4-hydroxyphenyl)amino)-8-isopentyl-5,7-dimethyl-7,8-dihydropteridin-6(5H)-one (CAS 501437-28-1), molecular formula C19H23F2N5O2 and molecular weight 391.42 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C19H23F2N5O2 |
| Molecular Weight | 391.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1984 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
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- 3-(3-(2',4'-Difluoro-[1,1'-biphenyl]-4-yl)-3-oxopropyl)quinazolin-4(3H)-one (CAS 134563-15-8)
- 4-(2,5-Difluoro-4-nitrophenoxy)-3-iodopyridin-2-amine (CAS 1345854-92-3)
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- 3,4-Difluoro-2-[(2-fluoro-4-iodophenyl)amino]benzoic Acid (CAS 391211-97-5)
- 3,4-Difluoro-2-((4-iodo-2-methylphenyl)amino)benzoic acid (CAS 934664-21-8)
- 4-Butyl-4'-((2,6-difluoro-4-propylphenyl)ethynyl)-1,1'-biphenyl (CAS 1229648-10-5)
Recommended Standards
- 2-((((2S,3S,4R,5R)-5-(6-Amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl)thio)ethanesulfonic acid (CAS 84211-32-5)
- 3-[(3,4,5-trimethoxyphenyl)methylidene]-1H,2H,3H-cyclopenta[b]quinoline-9-carboxylic acid (CAS 380574-32-3)
- 1-(2H-1,3-Benzodioxole-5-carbonyl)-4-[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]piperidine (CAS 352033-96-6)
- 4,4,4-(Pyridine-2,4,6-triyl)tribenzaldehyde (CAS 2230887-26-8)
- N-Propyl-N-(3-pyrrolidinylmethyl)-1-propanaminedihydrochloride (CAS 1219964-46-1)
- (R)-6-((benzyloxy)carbonyl)-6-azaspiro[2.5]Octane-1-carboxylic acid (CAS 1539277-95-6)
- 1-[(3-chlorophenyl)methyl]piperidine-3-carboxylic acid hydrochloride (CAS 1185356-93-7)
- (S)-3-Amino-3-(3,4-dimethoxyphenyl)propanoic acid (CAS 696641-73-3)
- Diclofenac Impurity 16 (CAS 146607-19-4)
- (R)-Methyl 1-amino-2,3-dihydro-1H-indene-1-carboxylate (CAS 166735-12-2)
- Darolutamide Impurity 31 (CAS CATO-C4X-310631)
- 2-((2-Chloropyrimidin-4-yl)amino)-2-phenylethan-1-ol (CAS 1482228-67-0)
- 1-(2,6-Dichloro-4-nitrophenyl)-1H-pyrrole (CAS 93516-62-2)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
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