5-chloro-2-methylpyrido[3,4-b]pyrazine CAS 556053-82-8
| CAS No. | 556053-82-8 |
| Molecular Formula | C8H16ClN3 |
| Molecular Weight | 189.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-chloro-2-methylpyrido[3,4-b]pyrazine (CAS 556053-82-8), a certified reference material (molecular formula C8H16ClN3, MW 189.69 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H16ClN3, 5-chloro-2-methylpyrido[3,4-b]pyrazine contains a nitrile group, chlorine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 189.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C8H16ClN3 |
| Molecular Weight | 189.69 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.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 4-chloro-2-methyl-pyrido[3,4-d]pyrimidine (CAS 101900-98-5)
- 4-chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine (CAS 1057672-77-1)
- 4-chloro-2,5-dimethyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1060815-87-3)
- 4-chloro-6,7-dimethyl-5h-pyrrolo[3,2-d]pyrimidine (CAS 1062517-17-2)
- 4-[Chloro(Dimethyl)Silyl]-3-Fluoropyridine (CAS 108093-98-7)
- 8-chloro-1,5-naphthyridin-3-amine (CAS 1151802-19-5)
- 4-chloro-7-methylpyrido[2,3-d]pyrimidine (CAS 117890-81-0)
- 6-chloro-2-methylimidazo[1,2-a]pyridin-3-amine (CAS 1215970-72-1)
Recommended Standards
- 5-chloro-2,7-dimethyl-pyrazolo[4,3-b]pyridine (CAS 2254506-82-4)
- 6-chloro-2,3-dimethyl-2H-pyrazolo[3,4-b]pyridine (CAS 2067257-98-9)
- 4-chloroquinazolin-6-amine (CAS 208533-37-3)
- 7-chloro-1,5-naphthyridin-3-amine (CAS 2007920-59-2)
- (3-Methyl-1-phenyl-1h-pyrazol-4-yl)methanamine (CAS 1020718-05-1)
- Methyl 2-chloro-4-methoxy-5-nitrobenzoate (CAS 90537-46-5)
- 2-Bromo-6-chloro-5-methylpyridin-3-amine (CAS 1823003-95-7)
- Azilsartan Impurity 72 (CAS 21606-04-2)
- Fasudil Impurity 18 (CAS CATO-C4X-136518)
- 1-Bromo-2-(4-nitrophenoxy)benzene (CAS 86607-76-3)
- 2-Hydroxy-N-(3-nitrophenyl)acetamide (CAS 859980-47-5)
- N-Allyl-2-methoxybenzamide (CAS 66897-24-3)
- 7-Methyl-2,3-dihydrobenzo[b][1,4]dioxine-6-carbaldehyde (CAS 724791-20-2)
- Peptide YY (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 81858-94-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com