5,7-Dichloro-3-iodo-1H-pyrazolo[4,3-d]pyrimidine CAS 1935431-10-9
| CAS No. | 1935431-10-9 |
| Molecular Formula | C5HCl2IN4 |
| Molecular Weight | 314.90 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 5,7-Dichloro-3-iodo-1H-pyrazolo[4,3-d]pyrimidine.
5,7-Dichloro-3-iodo-1H-pyrazolo[4,3-d]pyrimidine (CAS 1935431-10-9), molecular formula C5HCl2IN4 and molecular weight 314.90 g/mol, is a CATO reference standard with documented purity and traceability.
5,7-Dichloro-3-iodo-1H-pyrazolo[4,3-d]pyrimidine (C5HCl2IN4) contains a nitrile group, chlorine/iodine substitution. Halogen substitution raises its density and boiling point; 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.
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-3-iodo-1H-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 | C5HCl2IN4 |
| Molecular Weight | 314.90 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 |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 2,4-Dibromo-3-fluoro-6-nitrophenol (CAS 2924-30-3)
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- Hybutimibe Impurity 5 (CAS CATO-C4X-25055)
- 4-(4-Fluorophenyl)piperazin-1-amine (CAS 935260-35-8)
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- (5-(1,3-Dioxolan-2-yl)thiophen-2-yl)(3,5-dichlorophenyl)methanone (CAS 898778-96-6)
- Dimethyl 5-(3-formyl-2,5-dimethyl-1H-pyrrol-1-yl)isophthalate (CAS 327084-98-0)
- N-(3-Amino-4-chlorophenyl)-4-methylbenzamide (CAS 926201-74-3)
- Methyl 2-((ethoxycarbonothioyl)thio)propanoate (CAS 351491-23-1)
- 1-(1,2-Dihydroacenaphthylen-5-yl)-5-oxopyrrolidine-3-carboxylic acid (CAS 510737-50-5)
- 1-(5-Chloro-2-methoxypyridin-3-yl)-3-(7-cyclopropyl-2-methylthiazolo[5,4-b]pyridin-6-yl)urea (CAS 2178994-82-4)
- 2,4-Difluoro-5-methylbenzamide (CAS 1379078-33-7)
- CGMP Dependent Kinase Inhibitor Peptide (CAS 82801-73-8)
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