5,7-dichloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine CAS 1823331-38-9
| CAS No. | 1823331-38-9 |
| Molecular Formula | C7H14Cl2N4 |
| Molecular Weight | 225.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 225.12 g/mol gives 5,7-dichloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5,7-dichloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine (CAS 1823331-38-9) is a high-purity analytical reference standard with the molecular formula C7H14Cl2N4 and a molecular weight of 225.12 g/mol.
The molecular framework of 5,7-dichloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine (C7H14Cl2N4) is characterized by 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5,7-dichloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine 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 | C7H14Cl2N4 |
| Molecular Weight | 225.12 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.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related dichloro Standards
- 2,4-dichloro-7-methyl-pteridine (CAS 1379324-59-0)
- 2,4-dichloro-5,6-dimethylfuro[2,3-d]pyrimidine (CAS 1607479-45-7)
- 5,7-dichloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 928767-18-4)
- 1-(2,4-Dichloro-5-fluorophenyl)ethane-1-thiol (CAS 1183717-04-5)
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- 4,6-Dichloro-5-methoxy-2-(methylthio)pyrimidine (CAS 49668-65-7)
- 1,2-Dichloro-3-(methylsulfonyl)benzene (CAS 106418-92-2)
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Recommended Standards
- 5-(Perfluoroethyl)picolinaldehyde (CAS 1816285-55-8)
- (2-Bromo-1-cyclopropylethyl)benzene (CAS 186551-45-1)
- 5-(Perfluoroethyl)nicotinaldehyde (CAS 1816285-08-1)
- 1-(Bromomethyl)-1,2,3,4-tetrahydronaphthalene, 97% (CAS 194040-83-0)
- 2-(Dimethylamino)-3-methylbenzoic acid (CAS 689150-01-4)
- (S)-(4-benzylmorpholin-2-yl)(tetrahydro-2H-pyran-4-yl)methanone (CAS 852237-41-3)
- 2-(2-Fluoro-4-(trifluoromethyl)phenyl)ethan-1-ol (CAS 886761-78-0)
- 4-(4-Hydroxyphenyl)-2-methylphthalazin-1(2H)-one (CAS 199930-03-5)
- 4,6-Bis(ethylthio)-1-methyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 70011-77-7)
- 2-Methyl-1,2,3,4-tetrahydrobenzo[b][1,6]naphthyridine-10-carboxylic acid (CAS 380432-30-4)
- MBDB hydrochloride (CAS 128767-12-4)
- imidazo[1,2-a]pyrimidin-6-ylboronic acid (CAS 2426692-30-8)
- 3-Cycloheptyl-6,7-dimethoxy-2-[(2-methylpropyl)sulfanyl]-3,4-dihydroquinazolin-4-imine (CAS 860786-40-9)
- Tetrapeptide-30/Tegopep (CAS 1036207-61-0)
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