2-(3,4-Dichlorophenyl)-5-(methoxymethyl)pyrazolo[1,5-a]pyrimidin-7-ol CAS 439095-83-7
| CAS No. | 439095-83-7 |
| Molecular Formula | C14H11Cl2N3O2 |
| Molecular Weight | 324.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(3,4-Dichlorophenyl)-5-(methoxymethyl)pyrazolo[1,5-a]pyrimidin-7-ol.
2-(3,4-Dichlorophenyl)-5-(methoxymethyl)pyrazolo[1,5-a]pyrimidin-7-ol (CAS 439095-83-7) is a high-purity analytical reference standard with the molecular formula C14H11Cl2N3O2 and a molecular weight of 324.16 g/mol.
Structurally, 2-(3,4-Dichlorophenyl)-5-(methoxymethyl)pyrazolo[1,5-a]pyrimidin-7-ol (C14H11Cl2N3O2) 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 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 324.16 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H11Cl2N3O2 |
| Molecular Weight | 324.16 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichlorophenyl Standards
- 2-(2-((2,4-Dichlorophenyl)carbamoyl)phenyl)acetic acid (CAS 937604-95-0)
- 5-(2,4-Dichlorophenyl)-4-(1H-1,2,4-triazol-1-yl)cyclohexane-1,3-dione (CAS 439111-26-9)
- N-(3,4-dichlorophenyl)-2-(2-formylphenoxy)acetamide (CAS 574710-18-2)
- N-(3,4-dichlorophenyl)-2-(3-formylphenoxy)acetamide (CAS 575499-65-9)
- N-(3,4-dichlorophenyl)-2-(4-formylphenoxy)acetamide (CAS 579523-27-6)
- N-(3,4-Dichlorophenyl)-N-methyl-3-nitrobenzenecarboximidamide (CAS 339027-14-4)
- 2-((1-(3,4-Dichlorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl)amino)ethan-1-ol (CAS 890896-28-3)
- ((2,5-Dichlorophenyl)sulfonyl)-L-proline (CAS 298687-02-2)
Recommended Standards
- 2-(3-(4,5-Dichloro-1H-imidazol-1-yl)propyl)isoindoline-1,3-dione (CAS 655235-81-7)
- 2-(4-Chloro-2-formylphenoxy)-N-(4-chlorophenyl)acetamide (CAS 792945-84-7)
- 2-(2-Chloro-4-formylphenoxy)-N-(4-chlorophenyl)acetamide (CAS 792945-83-6)
- 2,4-Dichloro-1-hydroxy-3-methoxy-10-methylacridin-9(10H)-one (CAS 88901-79-5)
- Pidotimod (CAS 121808-62-6)
- Methyl 3-(N’-Hydroxycarbamimidoyl)benzoate (CAS 1227154-43-9)
- 3-Fluoro-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 1823271-62-0)
- (S)-3-amino-2-(2,3-dichlorobenzyl)propanoic acid (CAS 1260605-45-5)
- 2-(4-Aminophenyl)-5-heptadecyl-1-methyl-1H-pyrazol-3(2H)-one (CAS 194799-55-8)
- 3-Chloro-5-(hydroxymethyl)phenylboronic Acid Pinacol Ester (CAS 1112210-59-9)
- 4-(Hydroxymethyl)-5-(phenylamino)-2H-pyrrol-2-one (CAS 55876-73-8)
- 2-Chloro-N-[4-(cyanomethyl)phenyl]acetamide (CAS 90772-87-5)
- 2-(4-Amino-pyrazol-1-yl)-N-(tetrahydro-furan-2-ylmethyl)-acetamide hydrochloride (CAS 1361115-83-4)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
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