4-Methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine CAS 944901-77-3
| CAS No. | 944901-77-3 |
| Molecular Formula | C8H11N3 |
| Molecular Weight | 149.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (CAS 944901-77-3), a certified reference material (molecular formula C8H11N3, MW 149.19 g/mol) for analytical method development and quality control.
The molecular framework of 4-Methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (C8H11N3) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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-Methyl-5,6,7,8-tetrahydropyrido[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 | C8H11N3 |
| Molecular Weight | 149.19 g/mol |
| 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 Methyl Standards
- 2-Methyl-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1159882-42-4)
- 4-Methyl-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1187884-12-3)
- 2-Methyl-5,6,7,8-tetrahydropyrido[3,4-b]pyrazine (CAS 1260666-33-8)
- 6-Methyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (CAS 1260769-87-6)
- 8-Methyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (CAS 1260847-57-1)
- 8-Methyl-1,2,3,4-tetrahydropyrido[3,4-b]pyrazine (CAS 1934719-58-0)
- 5-Methyl-1,2,3,4-tetrahydropyrido[3,4-b]pyrazine (CAS 1935587-05-5)
- 1-Methyl-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (CAS 933733-84-7)
Recommended Standards
- 4-Methyl-3,4-dihydro-2H-pyrano[3,2-c]pyridine (CAS 214633-32-6)
- 4-Methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine (CAS 76881-49-7)
- 4-methyl-3,4-dihydro-2H-1,4-benzoxazine (CAS 77901-22-5)
- 4-Propylnicotinaldehyde (CAS 90732-14-2)
- Bucillamine (CAS 65002-17-7)
- 3-(Pyridin-3-yl)-4,5-dihydroisoxazole-5-carbonitrile (CAS 264606-40-8)
- 2-(6-(4-Methoxyphenyl)imidazo[2,1-b]thiazol-3-yl)-N-(thiophen-2-ylmethyl)acetamide (CAS 897460-84-3)
- 4-(Difluoromethyl)-5-fluoro-6-methoxypyridine-2-sulfonamide (CAS 1804939-98-7)
- 3-Oxoisothiazolidine-4-carboxylic acid (CAS 543740-58-5)
- 1-(2-Chloropyridin-4-yl)piperazine (CAS 854159-45-8)
- 7-Fluoro-3-hydroxybenzo[d][1,2,3]triazin-4(3H)-one (CAS 1818447-58-3)
- (2R,3R)-3-phenyltetrahydrofuran-2-carboxylic acid (CAS 1932359-39-1)
- 1-Bromo-2-chloro-4-fluoro-5-methoxybenzene (CAS 1823372-35-5)
- D-[Thr]7-Liraglutide (CAS CATO-C4X-199237)
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