Ethyl 3-(4-chlorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate CAS 685106-97-2
| CAS No. | 685106-97-2 |
| Molecular Formula | C16H11ClF3N3O2 |
| Molecular Weight | 369.73 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 Ethyl 3-(4-chlorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate.
Ethyl 3-(4-chlorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate (CAS 685106-97-2) is a high-purity analytical reference standard with the molecular formula C16H11ClF3N3O2 and a molecular weight of 369.73 g/mol.
Structurally, Ethyl 3-(4-chlorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate (C16H11ClF3N3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 369.73 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.
As a certified reference material (CRM), Ethyl 3-(4-chlorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H11ClF3N3O2 |
| Molecular Weight | 369.73 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 3-(2-Chlorophenyl)-5-[(1Z)-1-(dimethylamino)-4,4,4-trifluoro-3-oxobut-1-en-2-yl]-1,2-oxazole-4-carbonitrile (CAS 339106-73-9)
- Ethyl 3-(4-chlorophenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-6-carboxylate (CAS 685107-03-3)
- 1-(4-Chlorophenyl)-4-[6-(trifluoromethyl)pyridine-3-carbonyl]piperazine (CAS 1092346-43-4)
- (3-chlorophenyl){4-[3-(trifluoromethyl)pyridin-2-yl]piperazino}methanone (CAS 260367-98-4)
- Methyl 3-(((4-chlorophenyl)sulfonyl)methyl)-4-nitrobenzoate (CAS 339016-37-4)
- N-[(4-Chlorophenyl)methyl]-5-(trifluoromethyl)-1-benzothiophene-2-carboxamide (CAS 439109-07-6)
- 4-(3-(2-Chlorophenyl)-1,2,4-oxadiazol-5-yl)-1-(4-methoxyphenyl)pyrrolidin-2-one (CAS 941891-84-5)
- N-(2-(4-Chlorophenyl)acetoxy)-2-(quinolin-8-yloxy)acetimidamide (CAS 88758-87-6)
Recommended Standards
- 1-[8-Chloro-1-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl]piperidin-4-one (CAS 339011-74-4)
- Sdz 220-581 (CAS 174575-17-8)
- 1-(3,5-Dimethylphenyl)-3-phenyl-2-(trichloromethyl)imidazolidine (CAS 61545-12-8)
- Methyl 4-[2-(4-chloro-2-methylphenoxy)-2,2-difluoroacetamido]benzoate (CAS 339030-58-9)
- Methyl 2-(2-Bromophenyl)acetate (CAS 57486-69-8)
- 6-Ethanesulfonamidopyridine-3-carboxylic acid (CAS 1247722-43-5)
- 4-Isopropoxyphenylboronic Acid (CAS 153624-46-5)
- (E)-3-Aminobut-2-enenitrile (CAS 763-33-7)
- 2-(Cyclopropylsulfonyl)isonicotinic acid (CAS 1782791-12-1)
- Tributyl[6-(tetrahydropyran-4-yloxy)pyrid-2-yl]stannane (CAS 1007847-70-2)
- 2-(2-((5-Thioxo-4,5-dihydro-1,3,4-thiadiazol-2-yl)thio)ethyl)isoindoline-1,3-dione (CAS 477846-18-7)
- tert-Butyl 4-(4-cyanophenyl)-4-hydroxypiperidine-1-carboxylate (CAS 871112-38-8)
- 5,6-Dibromopyridine-2-carboxylic Acid (CAS 1206679-66-4)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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