4-Chloro-5,6-dihydrobenzo[h]quinazoline CAS 57711-36-1
| CAS No. | 57711-36-1 |
| Molecular Formula | C12H9ClN2 |
| Molecular Weight | 216.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C12H9ClN2, 4-Chloro-5,6-dihydrobenzo[h]quinazoline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 216.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-Chloro-5,6-dihydrobenzo[h]quinazoline (CAS 57711-36-1), a certified reference material (molecular formula C12H9ClN2, MW 216.67 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C12H9ClN2 |
| Molecular Weight | 216.67 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- (1E)-3-(4-chloro-3,5-dimethyl-1H-pyrazol-1-yl)-N'-hydroxypropanimidamide (CAS 1006336-93-1)
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- 4-Chloro-6-ethylquinoline-3-carbonitrile (CAS 1016819-25-2)
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Recommended Standards
- 3-Chloro-5,6-dihydrobenzo[h]cinnoline (CAS 25823-50-1)
- 4-Chloro-6,8-dimethylquinoline-3-carbonitrile (CAS 936497-94-8)
- 3-(4-Chloro-3,5-dimethyl-1h-pyrazol-1-yl)propanehydrazide (CAS 942877-64-7)
- 4-Chloro-9-methylpyrrolo[1,2-a]quinoxaline (CAS 251649-55-5)
- 3-Hydroxy-3-(4-isopropoxyphenyl)propanenitrile (CAS 1536145-76-2)
- (1R,6S,7R)-7-Bromobicyclo[4.1.0]heptane (CAS 1121-41-1)
- 2-(2-Cyclopropyl-6-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2223036-65-3)
- 2-(Thiophen-2-yl(m-tolyl)amino)acetic acid (CAS 725253-14-5)
- 2-(But-3-yn-1-yl)piperidine (CAS 1410220-69-7)
- tert-Butyl 4-(bromomethyl)-5-chloro-1H-benzo[d]imidazole-1-carboxylate (CAS 1823815-00-4)
- N-Methyl-2-(4-(trifluoromethyl)styryl)oxazol-4-amine (CAS 832730-30-0)
- (S)-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pentan-1-amine (CAS 1259365-03-1)
- 1-Benzhydryl-4-(3-nitro-4-(p-tolylthio)benzyl)piperazine (CAS 477869-34-4)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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