5-(4-Chlorophenoxy)pyrimidine-2,4-diamine CAS 7331-20-6
| CAS No. | 7331-20-6 |
| Molecular Formula | C10H9ClN4O |
| Molecular Weight | 236.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 236.66 g/mol gives 5-(4-Chlorophenoxy)pyrimidine-2,4-diamine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(4-Chlorophenoxy)pyrimidine-2,4-diamine (CAS 7331-20-6), molecular formula C10H9ClN4O and molecular weight 236.66 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(4-Chlorophenoxy)pyrimidine-2,4-diamine (C10H9ClN4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 236.66 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C10H9ClN4O |
| Molecular Weight | 236.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorophenoxy Standards
- [6-(4-chlorophenoxy)pyridin-3-yl]methanol (CAS 1160430-78-3)
- (2-(4-Chlorophenoxy)pyridin-3-yl)methanol (CAS 338413-59-5)
- 2-(4-Chlorophenoxy)-5-fluoroaniline (CAS 15212-01-8)
- 2-(2-Chlorophenoxy)-5-fluoroaniline (CAS 946774-87-4)
- 2-(3-Chlorophenoxy)-5-fluoroaniline (CAS 946716-93-4)
- 4-(2-Chlorophenoxy)-3-fluoroaniline (CAS 946785-59-7)
- 4-(3-Chlorophenoxy)-3-fluoroaniline (CAS 946699-10-1)
- 4-(4-Chlorophenoxy)-3-fluoroaniline (CAS 946664-06-8)
Recommended Standards
- 4-(Chloromethyl)-N-(1H-1,2,4-triazol-3-yl)benzamide (CAS 916791-21-4)
- 5-Amino-1-(2-chlorophenyl)-1H-pyrazole-4-carboxamide (CAS 792953-14-1)
- 3-(4-Chlorophenyl)-1h-pyrazole-5-carbohydrazide (CAS 890012-50-7)
- 5-Amino-1-(3-chlorophenyl)-1H-pyrazole-4-carboxamide (CAS 50427-78-6)
- 1-(4-Fluorophenyl)-N-(1-((4-methoxyphenyl)sulfonyl)-1,2,3,4-tetrahydroquinolin-6-yl)methanesulfonamide (CAS 946346-88-9)
- 1-(2,5-Dimethyl-phenyl)-2-(1,3-dioxolan-2-yl)-ethanone (CAS 1263366-11-5)
- (S)-1-(2-Nitrophenyl)pyrrolidin-3-amine hydrochloride (CAS 1286207-80-4)
- 2,4-Difluoro-3-methoxybenzoic Acid (CAS 178974-97-5)
- Fmoc-Val-Val-OH (CAS CATO-CPTD788596)
- 4-((4-Cyclopropylpiperazin-1-yl)methyl)aniline (CAS 1180132-11-9)
- 5-(Isothiocyanatomethyl)-1-methyl-1H-pyrazole (CAS 1343371-57-2)
- Isobutyl 2-oxo-2,3-dihydro-1H-imidazole-4-carboxylate (CAS 93805-09-5)
- 4-Chloro-3-(difluoromethyl)-5-nitropyridine-2-sulfonamide (CAS 1805414-90-7)
- Macrocyclic Peptide flaviviridae Viruses InhibitorDISCONTINUED (CAS 1510841-23-2)
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