2,3-dichloropyrido[3,4-b]pyrazine CAS 35251-99-1
| CAS No. | 35251-99-1 |
| Molecular Formula | C7H13Cl2N3 |
| Molecular Weight | 210.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
2,3-dichloropyrido[3,4-b]pyrazine (CAS 35251-99-1), molecular formula C7H13Cl2N3 and molecular weight 210.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 2,3-dichloropyrido[3,4-b]pyrazine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 210.10 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H13Cl2N3 |
| Molecular Weight | 210.10 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.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related dichloropyrido Standards
- 4,7-dichloropyrido[4,3-d]pyrimidine (CAS 1260670-81-2)
- 3,6-dichloropyrido[2,3-b]pyrazine (CAS 1350925-22-2)
- 5,7-dichloropyrido[3,4-b]pyrazine (CAS 1379338-74-5)
- 2,5-dichloropyrido[3,4-b]pyrazine (CAS 1600511-80-5)
- 4,6-dichloropyrido[3,2-d]pyrimidine (CAS 175358-02-8)
- 3,5-dichloropyrido[3,4-b]pyrazine (CAS 1952315-15-9)
- 2,3-dichloropyrido[2,3-b]pyrazine (CAS 25710-18-3)
- 2,7-dichloropyrido[4,3-d]pyrimidine (CAS 2387158-74-7)
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