4-Chloro-2-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine CAS 944901-71-7
| CAS No. | 944901-71-7 |
| Molecular Formula | C8H10ClN3 |
| Molecular Weight | 183.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
4-Chloro-2-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (CAS 944901-71-7) is a high-purity analytical reference standard with the molecular formula C8H10ClN3 and a molecular weight of 183.64 g/mol.
4-Chloro-2-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (C8H10ClN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C8H10ClN3 |
| Molecular Weight | 183.64 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 2-chloro-6-(pyrrolidin-1-yl)pyrazine (CAS 1000339-30-9)
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- 2-Chloro-5-(1-pyrrolidinyl)pyrazine (CAS 1017781-72-4)
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Recommended Standards
- 4-Chloro-2-(pyrrolidin-1-yl)pyrimidine (CAS 33852-01-6)
- 4-Chloro-5,6,7,8-tetrahydrophthalazin-1-amine (CAS 90006-64-7)
- 3-(4-Chloro-3,5-dimethyl-1h-pyrazol-1-yl)propanenitrile (CAS 90006-65-8)
- 4-Chloro-6-(cyclopropylmethyl)pyrimidin-2-amine (CAS 241821-65-8)
- Methyl (1R,2S)-1-amino-2-vinylcyclopropane-1-carboxylate (CAS 681260-04-8)
- N-(3-Chloro-4-methoxyphenyl)-2-{4-oxo-7-phenyl-3H,4H-thieno[3,2-d]pyrimidin-3-yl}acetamide (CAS 1105235-07-1)
- 2-(1-methyl-1H-pyrazol-4-yl)pyrimidine-5-carbaldehyde (CAS 1484524-86-8)
- 1-Methyl-2-nitro-1H-pyrrole (CAS 823-37-0)
- 1-(5-Bromo-2-fluorophenyl)-2-fluoroethanone (CAS 1600511-51-0)
- 1-(3-Chlorophenyl)-3-phenylpropan-1-amine (CAS 1178835-95-4)
- N,2-diethylbutan-1-amine (CAS 854585-58-3)
- 4,4-Difluoro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-2-amine (CAS 2574594-58-2)
- Tert-butyl 2-(methoxymethyl)-4-((tetrahydro-2H-pyran-2-yl)oxy)pyrrolidine-1-carboxylate (CAS 1822581-96-3)
- D-Gln19-Tirzepatide (CAS CATO-CPTD788915)
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