Ethyl 5-cyclopropyl-1-(3,5-dichloropyridin-4-yl)-1H-1,2,3-triazole-4-carboxylate CAS 1951441-56-7
| CAS No. | 1951441-56-7 |
| Molecular Formula | C13H12Cl2N4O2 |
| Molecular Weight | 327.17 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 5-cyclopropyl-1-(3,5-dichloropyridin-4-yl)-1H-1,2,3-triazole-4-carboxylate.
Ethyl 5-cyclopropyl-1-(3,5-dichloropyridin-4-yl)-1H-1,2,3-triazole-4-carboxylate (CAS 1951441-56-7), molecular formula C13H12Cl2N4O2 and molecular weight 327.17 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 5-cyclopropyl-1-(3,5-dichloropyridin-4-yl)-1H-1,2,3-triazole-4-carboxylate (C13H12Cl2N4O2) contains a nitrogen-containing heterocyclic scaffold, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C13H12Cl2N4O2 |
| Molecular Weight | 327.17 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Ethyl Standards
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- Methyl 5-Cyclopropyl-3-[2-(trifluoromethoxy)phenyl]isoxazole-4-carboxylate (CAS 1103500-32-8)
- Ethyl 2-(3-cyclopropyl-6-methyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate (CAS 1018141-86-0)
- 2-(3-Cyclopropyl-6-isopropyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid (CAS 1018144-00-7)
- Ethyl 2-(6-cyclopropyl-3-methyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate (CAS 938002-48-3)
- N-(2-((3-Cyclopropyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)-2-oxoimidazolidine-1-carboxamide (CAS 1797962-72-1)
- 1-(2-Cyclopropyl-6-(4-fluorophenyl)pyrimidin-4-yl)pyrrolidine-3-carboxylic acid (CAS 1707735-33-8)
Recommended Standards
- 6'-Bromo-4-hydroxy-8'-methyl-2'H-spiro[cyclohexane-1,3'-imidazo[1,5-a]pyridine]-1',5'-dione (CAS 1849594-08-6)
- 3-Bromo-5-(diphenylmethylene)furan-2(5H)-one (CAS 195390-04-6)
- 3-(4-Bromo-2-(3-ethoxy-3-oxopropyl)phenyl)acrylic acid (CAS 1807410-65-6)
- (E)-1-(6-Bromo-3-methoxy-2-nitrostyryl)pyrrolidine (CAS 950187-91-4)
- 1-Oxa-6-azaspiro[3.5]nonane (CAS 204388-70-5)
- Fmoc-Cys(NPys)-OH (CAS 159700-51-3)
- 1-(4-(Aminomethyl)phenyl)-2-(p-tolyl)ethan-1-one (CAS 1017781-79-1)
- 2-Amino-N-(3-fluoro-benzyl)-acetamide (CAS 864273-31-4)
- 1-(4-Methoxyphenyl)-2-(pyridin-2-yl)ethan-1-one (CAS 10420-97-0)
- (2R,5R)-5-(2,3-dihydro-1H-inden-4-yl)pyrrolidine-2-carboxylic acid (CAS 1335835-93-2)
- 2-(3,5-Dimethyl-1,1-dioxo-2h-1,2,6-thiadiazin-4-yl)acetic acid (CAS 872107-98-7)
- (6-Iodo-5-methoxypyridin-2-yl)methanol (CAS 154497-85-5)
- 2-Bromo-3,5-dichloro-4-methoxypyridine (CAS 1823961-01-8)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
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