5-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyrazine CAS 1260672-00-1
| CAS No. | 1260672-00-1 |
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyrazine (C6H5ClN4) contains a nitrile group, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyrazine (CAS 1260672-00-1), molecular formula C6H5ClN4 and molecular weight 168.58 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 5-Chloro-3-methyl-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.
Physical & Chemical Properties
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-2(3H)-one (CAS 1000342-80-2)
- 4-Chloro-2-methoxypyridine-3-carbonitrile (CAS 1008451-56-6)
- 6-Chloro-2-methyl-9H-purine (CAS 100859-35-6)
- 3-chloro-6-methyl-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1019033-24-9)
- 2-Chloro-8-methyl-9H-purine (CAS 1023813-16-2)
- 2-Chloro-5-methylfuro[2,3-d]pyrimidine (CAS 1030377-49-1)
- 7-chloro-5-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1055057-37-8)
- 2-Chloro-6-hydrazinylpyridine-4-carbonitrile (CAS 107445-56-7)
Recommended Standards
- 4-Chloro-1H-pyrrolo[2,3-c]pyridin-2(3H)-one (CAS 1260671-83-7)
- 4-Chloro-6-methoxynicotinonitrile, 97% (CAS 1261493-38-2)
- 3-Chloro-6-methyl-5H-pyrrolo[2,3-e][1,2,4]triazine (CAS 1260667-08-0)
- 3-Chloro-6-methoxypicolinonitrile (CAS 1261634-11-0)
- 5-((5-Methyl-1,3,4-thiadiazol-2-yl)thio)furan-2-carbaldehyde (CAS 330943-92-5)
- (S)-2,3,4,6,7,11b-hexahydro-1H-pyrazino[2,1-a]isoquinoline dihydrochloride (CAS 5374-19-6)
- 3-(3,5-Dichlorophenyl)aniline, HCl (CAS 1355247-80-1)
- 5-((Methylthio)methyl)isoxazole-3-carboxylic acid (CAS 84654-30-8)
- tert-butyl N-(5-oxohexyl)carbamate (CAS 153495-58-0)
- 4-chloro-N-methylpyrimidin-2-amine (CAS 22404-46-2)
- 2-amino-4-(3-bromophenyl)-6-(4-fluoro-2-(methoxymethoxy)phenyl)nicotinonitrile (CAS 925923-84-8)
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