7-chloro-1,3-dimethyl-pyrazolo[4,3-d]pyrimidine CAS 89239-18-9
| CAS No. | 89239-18-9 |
| Molecular Formula | C7H15ClN4 |
| Molecular Weight | 190.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 7-chloro-1,3-dimethyl-pyrazolo[4,3-d]pyrimidine (CAS 89239-18-9), a certified reference material (molecular formula C7H15ClN4, MW 190.67 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H15ClN4, 7-chloro-1,3-dimethyl-pyrazolo[4,3-d]pyrimidine contains a nitrile group, chlorine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 190.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C7H15ClN4 |
| Molecular Weight | 190.67 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related chloro Standards
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- 5-Chloro-4-methoxy-1H-pyrrolo[2,3-b]pyridine (CAS 1020056-69-2)
- 4-Chloro-5-methoxy-1H-pyrrolo[2,3-b]pyridine (CAS 1020056-72-7)
- 8-chloro-1,5-naphthyridin-3-ol (CAS 1071541-08-6)
- 2-Chloro-N-(1-methylpiperidin-4-yl)acetamide (CAS 1096305-49-5)
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Recommended Standards
- 6-chlorocinnolin-4-ol (CAS 876-89-1)
- 7-chloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 923282-50-2)
- 4-Propylpiperazine-1-carbonyl chloride (CAS 747355-56-2)
- 8-Chloronon-8-enoic acid (CAS 731773-30-1)
- 1-(Tert-butyl) 3-methyl (S)-5-oxopiperazine-1,3-dicarboxylate (CAS 1448348-02-4)
- 2-(Dimethylamino)-6-oxo-4-(4-phenylpiperazin-1-yl)-6H-1,3-oxazine-5-carbonitrile (CAS 477853-40-0)
- Tos-PEG5-CH2COOtBu (CAS 1949793-62-7)
- MIK665, >98% (HPLC) (CAS 1799631-75-6)
- Lithium Trifluoro(trifluoromethyl)borate - Dimethyl Carbonate Complex (CAS 1443685-69-5)
- 5-Chloro-4-(((2-chlorophenyl)thio)methyl)-1-methyl-3-((p-tolylthio)methyl)-1H-pyrazole (CAS 318248-71-4)
- 2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(1H-pyrrol-2-yl)propanoic acid (CAS 1379859-26-3)
- 3-Cyclopropoxy-4-fluoro-N,N-dimethylpyridin-2-amine (CAS 1243363-63-4)
- 1-[(4-aminophenyl)methyl]piperidin-4-ol (CAS 262368-63-8)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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