5,7-Dichloro-8-iodo-2-(methylthio)pyrido[4,3-d]pyrimidin-4(3H)-one CAS 2763158-54-7
| CAS No. | 2763158-54-7 |
| Molecular Formula | C8H4Cl2IN3OS |
| Molecular Weight | 388.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5,7-Dichloro-8-iodo-2-(methylthio)pyrido[4,3-d]pyrimidin-4(3H)-one (CAS 2763158-54-7), a certified reference material (molecular formula C8H4Cl2IN3OS, MW 388.01 g/mol) for analytical method development and quality control.
Structurally, 5,7-Dichloro-8-iodo-2-(methylthio)pyrido[4,3-d]pyrimidin-4(3H)-one (C8H4Cl2IN3OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine/iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 388.01 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures 5,7-Dichloro-8-iodo-2-(methylthio)pyrido[4,3-d]pyrimidin-4(3H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H4Cl2IN3OS |
| Molecular Weight | 388.01 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 1,1,1,3,3,3-Hexafluoro-2-(3-fluoro-4-iodophenyl)propan-2-ol (CAS 1358953-45-3)
- Tert-butyl 3-(piperidin-4-yloxy)propanoate (CAS 1340460-24-3)
- (S)-Pyrrolidin-3-yl 2-phenylethanesulfonate (CAS 118354-71-5)
- methyl 3-hydroxy-2,2-dimethylcyclobutane-1-carboxylate (CAS 527751-16-2)
- 2-{[(1-ethyl-3-methyl-1h-pyrazol-4-yl)methyl]sulfanyl}acetic acid (CAS 1006336-65-7)
- N,N-Dimethyl-N'-(2-(methylthio)pyrimidin-5-yl)formimidamide (CAS 52767-93-8)
- Gefitinib Impurity 37 (CAS CATO-C4X-111737)
- 4-(2,4-Dichloro-5-methoxyphenoxy)aniline (CAS 125138-50-3)
- 8-Bromoquinoxaline-6-carboxamide (CAS 1706445-77-3)
- Venetoclax Impurity 33 (CAS CATO-C4X-249533)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com