5,7-Dichloro-3-cyclopropyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidine CAS 1956331-20-6
| CAS No. | 1956331-20-6 |
| Molecular Formula | C9H8Cl2N4 |
| Molecular Weight | 243.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5,7-Dichloro-3-cyclopropyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1956331-20-6) is a high-purity analytical reference standard with the molecular formula C9H8Cl2N4 and a molecular weight of 243.09 g/mol.
The molecular framework of 5,7-Dichloro-3-cyclopropyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidine (C9H8Cl2N4) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 5,7-Dichloro-3-cyclopropyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H8Cl2N4 |
| Molecular Weight | 243.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dichloro Standards
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Recommended Standards
- (2-(3,5-Dichlorophenyl)-1H-imidazol-5-yl)methanol (CAS 188257-68-3)
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- (4-(N-Isopropylsulfamoyl)phenyl)boronic acid (CAS 850589-31-0)
- Tert-butyl 3-hydrazinylpropanoate (CAS 107349-78-0)
- (E)-3-(2-(3,5-dimethylphenoxy)phenyl)acrylic acid (CAS 338393-75-2)
- 2-azido-N-[2-(2,6-dioxo-3-piperidyl)-1,3-dioxo-isoindolin-4-yl]acetamide (CAS 444287-85-8)
- 3-(3,4-Dimethoxyphenyl)-3h-[1,2,3]triazolo[4,5-d]pyrimidin-7-ol (CAS 1082436-93-8)
- Methyl 2,2-dimethylbutanoate (CAS 813-67-2)
- (E)-4-[4-(Isobutyrylamino)anilino]-4-oxo-2-butenoic acid (CAS 940210-86-6)
- 4,4,5,5-Tetramethyl-2-(4-methylpent-3-en-1-yl)-1,3,2-dioxaborolane (CAS 1073354-67-2)
- 1H-Pyrazole-3-carboxylic acid, 4-bromo-1-propyl- (CAS 1006319-30-7)
- (R)-N-(pyrrolidin-3-yl)thiophene-2-carboxamide hydrochloride (CAS 1354010-59-5)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
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