6-Chloro-3-methylisoxazolo[4,5-b]pyrazine CAS 41230-55-1
| CAS No. | 41230-55-1 |
| Molecular Formula | C6H4ClN3O |
| Molecular Weight | 169.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6-Chloro-3-methylisoxazolo[4,5-b]pyrazine.
6-Chloro-3-methylisoxazolo[4,5-b]pyrazine (CAS 41230-55-1), molecular formula C6H4ClN3O and molecular weight 169.57 g/mol, is a CATO reference standard with documented purity and traceability.
6-Chloro-3-methylisoxazolo[4,5-b]pyrazine (C6H4ClN3O) contains an amide group, a hydroxyl group, an ether linkage, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C6H4ClN3O |
| Molecular Weight | 169.57 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.) | 1968 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 7-chloro-1H-pyrazolo[4,3-d]pyrimidin-5-amine (CAS 1086398-36-8)
- 2-Chloro-4-methoxypyrimidine-5-carbonitrile (CAS 1106295-93-5)
- 3-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-6-amine (CAS 1150888-24-6)
- 7-Chloro-3H-imidazo[4,5-b]pyridine 4-oxide (CAS 115953-98-5)
- 7-Chloro-2-methyloxazolo[5,4-d]pyrimidine (CAS 118767-93-4)
- 3-Chloro-6-(hydroxymethyl)pyrazine-2-carbonitrile (CAS 1257072-48-2)
- 7-Chloro[1,2,4]triazolo[4,3-c]pyrimidin-5-amine (CAS 1306739-68-3)
- 5-Chloro-3-(furan-2-yl)-1H-1,2,4-triazole (CAS 1315346-11-2)
Recommended Standards
- 6-Chloro-1H-imidazo[4,5-c]pyridin-2-ol (CAS 7205-43-8)
- 6-Chlorobenzo[c]isoxazol-3(1H)-one (CAS 344779-30-2)
- 6-chloro-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (CAS 304861-88-9)
- 6-Chloroimidazo[1,2-b]pyridazin-2-ol (CAS 55690-62-5)
- 2-{methyl[2-oxo-2-(1,2,3,4-tetrahydroquinolin-1-yl)ethyl]amino}acetic acid hydrochloride (CAS 1354949-88-4)
- 4-Chloro-6-(difluoromethyl)pyrimidine (CAS 1261737-05-6)
- 2-(Thiophen-2-yl)oxazol-5(4H)-one (CAS 230283-16-6)
- 4-Amino-7-isopropyl-2-methylisoindoline-1,3-dione (CAS 54108-78-0)
- 2-(3-(2-Fluorophenyl)-6-oxopyridazin-1(6H)-yl)acetic acid (CAS 1206119-33-6)
- 3-(4-Methoxyphenyl)-N-[4-(propan-2-yl)phenyl]-2-(2H-1,2,3,4-tetrazol-5-yl)propanamide (CAS 483993-19-7)
- Ethyl 1,2,4-triazine-5-carboxylate (CAS 143209-28-3)
- 4- Amino- 2, 3, 5- trimethylphenol (CAS 10486-46-1)
- (Z)-2-Methyl-4-((5-methylthiophen-2-yl)methylene)oxazol-5(4H)-one (CAS 88991-48-4)
- [D-Ser8]-Semaglutide A (CAS CATO-C4X-2226116)
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