2,5-Dichloropyrazine CAS 19745-07-4
| CAS No. | 19745-07-4 |
| Molecular Formula | C4H2Cl2N2 |
| Molecular Weight | 148.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,5-Dichloropyrazine 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.
2,5-Dichloropyrazine (CAS 19745-07-4), molecular formula C4H2Cl2N2 and molecular weight 148.98 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4H2Cl2N2, 2,5-Dichloropyrazine contains a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 148.98 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C4H2Cl2N2 |
| Molecular Weight | 148.98 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloropyrazine Standards
- 2,3-Dichloropyrazine (CAS 4858-85-9)
- 4774-14-5 2,6-Dichloropyrazine Pyrazine, 2,6-dichloro- AI3-61780 EINECS 225-316-8 (CAS 4774-14-5)
- 2,6-Dichloropyrazine 1-oxide (CAS 61655-70-7)
- 3,5-Dichloropyrazine-2-carbonitrile (CAS 313339-92-3)
- 3,6-Dichloropyrazine-2-carbaldehyde (CAS 1357172-39-4)
- 3,5-Dichloropyrazine-2-carbaldehyde (CAS 136866-27-8)
- 3,5-Dichloropyrazine-2-methanol (CAS 313339-89-8)
- 3,5-Dichloropyrazine-2-carboxamide (CAS 312736-50-8)
Recommended Standards
- 3,5-Dichloropyridazine (CAS 1837-55-4)
- 2,3-Dichloropyridine-2-13C (CAS 1644451-39-7)
- 4,5-Dichloropyridazine (CAS 55271-49-3)
- 1,3-Dichloro-1,1-difluoropropane (CAS 819-00-1)
- 3-Oxobutanoyl chloride (CAS 39098-85-6)
- 4-Fluoro-N-((1-methyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-3-yl)methyl)-N-phenylbenzamide (CAS 1160245-39-5)
- 4-Oxo-4-((2-((tetrahydrofuran-2-yl)methoxy)phenyl)amino)butanoic acid (CAS 925058-77-1)
- (3,5-Bis(trifluoromethyl)phenyl)tributylstannane (CAS 717918-62-2)
- Norcocaine Hydrochloride (CAS 61585-22-6)
- 4-Iodoisoquinolin-3-amine (CAS 503089-88-1)
- Methyl 2-[4-(chlorosulfonyl)phenyl]acetate (CAS 53305-12-7)
- Deuterated 2-butoxyethanol (CAS 139754-38-4)
- N-(2-Hydroxy-5-isopropoxyphenyl)methanesulfonamide (CAS 1243473-50-8)
- Semaglutide impurity 195 (CAS CATO-C4X-2226195)
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