1,3-Dichloro-7-methylisoquinoline CAS 21902-37-4
| CAS No. | 21902-37-4 |
| Molecular Formula | C10H7Cl2N |
| Molecular Weight | 212.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,3-Dichloro-7-methylisoquinoline is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,3-Dichloro-7-methylisoquinoline (CAS 21902-37-4) is a high-purity analytical reference standard with the molecular formula C10H7Cl2N and a molecular weight of 212.08 g/mol.
1,3-Dichloro-7-methylisoquinoline (C10H7Cl2N) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C10H7Cl2N |
| Molecular Weight | 212.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,4-Dichloro-6-methylquinoline (CAS 102878-18-2)
- 2,4-Dichloro-7-methylquinoline (CAS 102878-19-3)
- 2,4-Dichloro-8-methylquinoline (CAS 102878-20-6)
- 2,8-Dichloro-6-methylquinoline (CAS 1195523-25-1)
- 2,7-Dichloro-8-methylquinoline (CAS 1215205-97-2)
- 2,7-Dichloro-3-methylquinoline (CAS 132118-46-8)
- 2,8-Dichloro-3-methylquinoline (CAS 1339432-40-4)
- 2,5-Dichloro-8-methylquinoline (CAS 1340414-32-5)
Recommended Standards
- 1,3-Dichloro-5-methylisoquinoline (CAS 21902-40-9)
- 1,3-Dichloro-8-methylisoquinoline (CAS 21902-39-6)
- 1-(Dichloromethyl)isoquinoline (CAS 88237-16-5)
- 2-(2,5-Dichlorophenyl)pyrrole (CAS 99113-94-7)
- 42406-53-1 Butanedioic acid, (1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-, (S)- (S)-(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)butanedioic acid N-Phthaloyl-L-aspartic acid (CAS 42406-53-1)
- 8-Aminoquinoline-4-Carboxylic Acid (CAS 121689-23-4)
- Rel-(5R,6R)-5-amino-6-(1-methyl-1H-imidazol-5-yl)-1-propylpiperidin-2-one (CAS 1807895-93-7)
- 2-(2-Chloropyridin-3-yl)-1-(3,4-dichlorobenzyl)-5,6-dimethyl-1H-benzo[d]imidazole (CAS 344279-44-3)
- 1-(2-Hydroxy-4-methoxyphenyl)-3-(3-hydroxy-4-methoxyphenyl)prop-2-en-1-one (CAS 2567-65-9)
- 2-Benzyl-1,2,5-thiadiazolidine 1,1-dioxide (CAS 144432-72-4)
- (S)-2-Amino-N-(4-fluorophenyl)propanamide (CAS 1026868-16-5)
- 3-[(Benzylamino)sulfonyl]-4-bromobenzoic acid (CAS 312758-94-4)
- 4-Amino-4-methylpiperidine (CAS 196614-16-1)
- Semaglutide impurity 195 (CAS CATO-C4X-2226195)
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