4-Methoxy-7H-pyrimido[4,5-b][1,4]thiazin-6-amine hydrochloride CAS 50602-44-3
| CAS No. | 50602-44-3 |
| Molecular Formula | C7H8N4OS |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Methoxy-7H-pyrimido[4,5-b][1,4]thiazin-6-amine hydrochloride (CAS 50602-44-3), molecular formula C7H8N4OSHCl and molecular weight 232.69 g/mol, is a CATO reference standard with documented purity and traceability.
4-Methoxy-7H-pyrimido[4,5-b][1,4]thiazin-6-amine hydrochloride (C7H8N4OSHCl) contains an amide group, sulfur-containing functionality, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 4-Methoxy-7H-pyrimido[4,5-b][1,4]thiazin-6-amine hydrochloride 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.
Physical & Chemical Properties
| Molecular Formula | C7H8N4OS HCl |
| Molecular Weight | 232.69 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 | 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.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 1-(2-Methoxy-6-(methylsulfonyl)phenyl)piperazine (CAS 1000018-42-7)
- 6-methoxy-1-methyl-1H-1,3-benzodiazol-7-amine (CAS 1000202-26-5)
- 2-Methoxy-3-(trifluoromethyl)benzaldehyde (CAS 1000339-54-7)
- 1-Methoxy-3-methyl-5-(trifluoromethoxy)benzene (CAS 1000339-56-9)
- 5-Methoxy-7-methyl-1H-indazole-3-carbaldehyde (CAS 1000340-55-5)
- 5-Methoxy-7-methyl-1H-indazole-3-carboxylic acid (CAS 1000340-57-7)
- 5-Methoxy-6-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-90-8)
- 6-Methoxy-4-nitro-1H-indazole (CAS 1000341-08-1)
Recommended Standards
- 4,4'-(1,4-Phenylenebis(ethyne-2,1-diyl))dianiline (CAS 246141-52-6)
- N-(4-Chlorophenylsulfonyl)glycine (CAS 13029-72-6)
- 6,7-Dichloro-2-(2,3-dimethylphenoxy)-3-(trifluoromethyl)quinoxaline (CAS 477889-38-6)
- 2-(2-Bromo-6-hydroxypyridin-4-yl)acetic acid (CAS 1393530-68-1)
- Imazamethabenz-methyl isomer-1 (CAS 69969-22-8)
- 1-tert-Butyl 4-methyl 4-(aminomethyl)piperidine-1,4-dicarboxylate (CAS 362703-35-3)
- 4-(2,5-Dimethylphenoxy)butanoic acid (CAS 105401-49-8)
- Ethyl 7-chloro-2-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate (CAS 223141-46-6)
- 2,4-Dichloro-5-(methoxymethyl)pyrimidine (CAS 89380-14-3)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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