5-Cyano-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylic acid CAS 1095822-79-9
| CAS No. | 1095822-79-9 |
| Molecular Formula | C9H6N4O2 |
| Molecular Weight | 202.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Cyano-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylic acid (CAS 1095822-79-9), molecular formula C9H6N4O2 and molecular weight 202.17 g/mol, is a CATO reference standard with documented purity and traceability.
5-Cyano-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylic acid (C9H6N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.
As a certified reference material (CRM), 5-Cyano-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylic acid 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 | C9H6N4O2 |
| Molecular Weight | 202.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 4 |
Related Cyano Standards
- Methyl 5-cyano-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylate (CAS 1095822-75-5)
- 3-Cyano-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 329207-47-8)
- 4-Cyano-6-(difluoromethyl)-2-fluoropyridine-3-methanol (CAS 1806844-34-7)
- 4-Cyano-6-(difluoromethyl)-3-fluoropyridine-2-methanol (CAS 1806873-66-4)
- 4-Cyano-5-(difluoromethyl)-3-fluoro-2-methoxypyridine (CAS 1806906-88-6)
- 4-Cyano-3-(difluoromethyl)-2-fluoropyridine-6-methanol (CAS 1806951-58-5)
- Ethyl 2-cyano-3-(4-pyridinyl)acrylate (CAS 123293-73-2)
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