4-methoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine CAS 944902-70-9
| CAS No. | 944902-70-9 |
| Molecular Formula | C8H11N3O |
| Molecular Weight | 165.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-methoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine (CAS 944902-70-9), a certified reference material (molecular formula C8H11N3O, MW 165.19 g/mol) for analytical method development and quality control.
Structurally, 4-methoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine (C8H11N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 165.19 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 4-methoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine 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 | C8H11N3O |
| Molecular Weight | 165.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 1987 |
| Nitrogen Atoms | 3 |
Related methoxy Standards
- (S)-6-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1034926-63-0)
- 5-Methoxy-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1058704-69-0)
- 4-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1186320-53-5)
- 1-(2-Methoxy-5-methylpyridin-3-yl)ethanone (CAS 1203499-64-2)
- (S)-4-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1212802-03-3)
- (S)-5-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1212943-41-3)
- (S)-7-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1213413-77-4)
- (R)-4-Methoxy-2,3-dihydrobenzofuran-3-amine (CAS 1213842-24-0)
Recommended Standards
- 4-Methoxy-3-methylbenzamide (CAS 932123-52-9)
- 4-Methoxy-6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine (CAS 61539-20-6)
- 4-Methoxy-2-((methylimino)methyl)phenol (CAS 357423-77-9)
- 4-Methoxy-N-methylbenzamide (CAS 3400-22-4)
- 3-Amino-N-(pyridin-3-ylmethyl)propanamide hydrochloride (CAS 1208947-75-4)
- 1-(1-Bromoethyl)-4-(difluoromethoxy)benzene (CAS 1094363-83-3)
- 1-[(4-Bromophenyl)methoxy]-2-(2,4-dichlorophenyl)-1H-imidazo[4,5-b]pyridine (CAS 338978-58-8)
- 2-Benzhydryl-5-oxa-2,8-diazaspiro[3.5]Nonan-7-one (CAS 1179337-02-0)
- Lercanidipine Impurity 36 (CAS 100427-26-7)
- (S)-4-(Methylthio)-2-(quinazolin-4-ylamino)butanoic acid (CAS 55040-15-8)
- 2-Cyclohexyl-6-hydroxypyrimidin-4(3H)-one (CAS 94052-08-1)
- (4aR,7aS)-rel-6-Boc-octahydropyrrolo[3,4-b][1,4]oxazine (CAS 138027-02-8)
- 2-(1-cHloropropan-2-ylidene)hydrazinecarboxamide (CAS 53646-01-8)
- Tirzepatide Impurity 35 (CAS CATO-C4X-324035)
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