3,6-Dichloro-1H-pyrazolo[3,4-b]pyrazine CAS 2387248-25-9
| CAS No. | 2387248-25-9 |
| Molecular Formula | C5H2Cl2N4 |
| Molecular Weight | 189.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,6-Dichloro-1H-pyrazolo[3,4-b]pyrazine 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.
3,6-Dichloro-1H-pyrazolo[3,4-b]pyrazine (CAS 2387248-25-9), molecular formula C5H2Cl2N4 and molecular weight 189.00 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 3,6-Dichloro-1H-pyrazolo[3,4-b]pyrazine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 189.00 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C5H2Cl2N4 |
| Molecular Weight | 189.00 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dichloro Standards
- 5,7-Dichloro-1H-pyrazolo[4,3-d]pyrimidine (CAS 1196157-42-2)
- 3,4-dichloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 1262408-00-3)
- 3,6-Dichloro-[1,2,3]triazolo[1,5-a]pyrimidine (CAS 1414959-03-7)
- 2,6-Dichloro-4-isocyanatopyridine (CAS 159178-03-7)
- 4,7-Dichloro-1H-imidazo[4,5-d]pyridazine (CAS 17998-43-5)
- 4,6-dichloro-2H-pyrazolo[3,4-d]pyrimidine (CAS 1821250-07-0)
- 2,8-DIchloro-[1,2,4]triazolo[1,5-a]pyrazine (CAS 1936295-68-9)
- 3,5-Dichloro-1H-pyrazolo[4,3-d]pyrimidine (CAS 1936350-27-4)
Recommended Standards
- 2,6-Dichloro-3-isocyanatopyridine (CAS 58584-84-2)
- 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 42754-96-1)
- 2,4-Dichlorofuro[3,2-d]pyrimidine, 97% (CAS 956034-07-4)
- 4,6-Dichloro-3H-[1,2,3]triazolo[4,5-c]pyridine (CAS 501358-54-9)
- 2-Amino-4-chloro-N-cyclopropylbenzamide (CAS 63887-20-7)
- 8-tert-Butyl-4-(furan-2-carbonyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (CAS 1326811-32-8)
- 5-Bromo-N-(naphtho[2,1-d]thiazol-2-yl)thiophene-2-carboxamide (CAS 325725-68-6)
- 3-Chloro-2-methoxy-5-(trifluoromethyl)pyridine 1-oxide (CAS 1823188-17-5)
- 4'-Bromo-2'-fluoro-6'-nitroacetophenone (CAS 1805937-36-3)
- 7-Methyl-1H-indole-2-carboxylic acid (CAS 18474-60-7)
- N-(5-Amino-2-methoxyphenyl)-2-[4-(tert-butyl)-phenoxy]acetamide (CAS 1020055-55-3)
- 4-Hydroxy-6-methyl-2-phenylquinoline (CAS 1148-49-8)
- (2-methylindazol-5-yl)boronic acid (CAS 952319-71-0)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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