2-Chloro-7,8-dihydro-6H-pyrimido[5,4-b][1,4]oxazine CAS 1303587-99-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1303587-99-6 |
| Molecular Formula | C6H6ClN3O |
| Molecular Weight | 171.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-7,8-dihydro-6H-pyrimido[5,4-b][1,4]oxazine (CAS 1303587-99-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H6ClN3O. Molecular weight: 171.58 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H6ClN3O |
| Molecular Weight | 171.58 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 4-Chloro-5-(hydroxymethyl)picolinaldehyde (CAS 1289011-91-1)
- 4-Chloro-6H,7H,8H-pyrimido[5,4-b][1,4]oxazine (CAS 1309377-79-4)
- 6-Methoxypicolinoyl chloride (CAS 1269418-09-8)
- 1-(5-Bromofuran-2-yl)ethanamine hydrochloride (CAS 2250241-99-5)
- 1-Chloro-3-(2,2-dimethylpropoxy)benzene (CAS 1881288-93-2)
- 3-Methyl-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic Acid (CAS 1031619-88-1)
- 3-(2-Chloro-1,1,2-trifluoroethoxy)-1,2-propeneoxide (CAS 122502-50-5)
- Ethyl 2-amino-4-cyanobutanoate (CAS 82672-94-4)
- Pregabalin Impurity 150 (CAS 51840-50-7)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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