1-Chloro-5-nitroisoquinoline CAS 58142-97-5
| CAS No. | 58142-97-5 |
| Molecular Formula | C9H5ClN2O2 |
| Molecular Weight | 208.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Chloro-5-nitroisoquinoline (C9H5ClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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).
1-Chloro-5-nitroisoquinoline (CAS 58142-97-5), molecular formula C9H5ClN2O2 and molecular weight 208.60 g/mol, is a CATO reference standard with documented purity and traceability.
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), 1-Chloro-5-nitroisoquinoline 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 | C9H5ClN2O2 |
| Molecular Weight | 208.60 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 3-Chloro-6-nitroquinoline (CAS 101860-71-3)
- 8-Chloro-1,7-naphthyridine-6-carboxylic acid (CAS 1019111-25-1)
- 3-(4-Chloro-3-nitrophenyl)prop-2-enenitrile (CAS 1027720-44-0)
- 3-Chloro-5-nitroisoquinoline (CAS 10296-47-6)
- 7-Chloro-4-nitroquinoline (CAS 1076199-85-3)
- 3-Chloro-5-nitroquinoline (CAS 116529-79-4)
- 6-chloro-3-nitro-pyridine-2-carboxylic acid (CAS 1204400-58-7)
- 8-Chloro-6-nitroquinoline (CAS 121465-04-1)
Recommended Standards
- 1-Chloro-4-nitroisoquinoline (CAS 65092-53-7)
- 1-Chloro-7-nitroisoquinoline (CAS 244219-94-1)
- 1-(2-Chloropyridin-3-yl)-1H-pyrrole-2,5-dione (CAS 278610-39-2)
- 1-Chloromethyl-2,4-diisocyanatobenzene (CAS 51979-57-8)
- (R)-2-Phenylpyrrolidine (CAS 56523-47-8)
- Sodium 1-(tert-butoxycarbonyl)azetidine-3-sulfinate (CAS 1622013-57-3)
- 4-(4-(Ethoxycarbonyl)phenyl)picolinic acid (CAS 1261906-09-5)
- 4-(Naphthalen-2-yl)-N-phenylaniline (CAS 897671-79-3)
- 2-(2-(2-(2-Hydroxyethoxy)ethoxy)ethoxy)ethyl acrylate (CAS 19812-60-3)
- 3-[(pyrrolidin-3-yl)amino]benzonitrile hydrochloride (CAS 1955531-78-8)
- N-(2-Cyanophenyl)-N-isopropylmethanesulfonamide (CAS 1820735-49-6)
- 4-(Difluoromethyl)-2-ethylbenzo[d]oxazole (CAS 1804469-69-9)
- Ethyl 2-(4-hydroxyphenyl)-2-oxoacetate (CAS 70080-54-5)
- Neuropeptide FF (CAS 99566-27-5)
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