4-Bromo-1-chloro-3-methyl-isoquinoline CAS 869898-11-3
| CAS No. | 869898-11-3 |
| Molecular Formula | C10H7BrClN |
| Molecular Weight | 256.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-1-chloro-3-methyl-isoquinoline (CAS 869898-11-3), molecular formula C10H7BrClN and molecular weight 256.53 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Bromo-1-chloro-3-methyl-isoquinoline (C10H7BrClN) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 256.53 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-Bromo-1-chloro-3-methyl-isoquinoline 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 | C10H7BrClN |
| Molecular Weight | 256.53 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.) | 1987 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 6-Bromo-7-chloro-8-methylquinoline (CAS 1033202-16-2)
- 4-Bromo-5-chloro-8-methylquinoline (CAS 1070879-41-2)
- 4-Bromo-7-chloro-8-methylquinoline (CAS 1070879-42-3)
- 4-Bromo-8-chloro-6-methylquinoline (CAS 1070879-43-4)
- 4-Bromo-6-chloro-2-methylquinoline (CAS 1070879-50-3)
- 4-Bromo-7-chloro-2-methylquinoline (CAS 1070879-51-4)
- 4-Bromo-8-chloro-2-methylquinoline (CAS 1070879-52-5)
- 6-Bromo-2-chloro-3-methylquinoline (CAS 113092-96-9)
Recommended Standards
- 3-(Bromomethyl)-7-chloroisoquinoline (CAS 234098-38-5)
- 4-Bromo-1-chloro-7-methylisoquinoline (CAS 877263-70-2)
- 3-(Bromomethyl)-4-chloroquinoline (CAS 397322-26-8)
- 4-Bromo-1-chloronaphthalen-2-amine (CAS 759398-90-8)
- Methyl (2R,4S)-4-Amino-1-Cbz-pyrrolidine-2-carboxylate (CAS 739360-84-0)
- 4-Acetyl-3-methyl-1H-pyrrole-2-carbonitrile (CAS 112381-10-9)
- (1,3-Dimethyl-2,4,6-trioxo-2,3,4,5,6,7-hexahydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)-acetic acid (CAS 208465-97-8)
- (3S,7AR)-3-isopropyl-7a-methyltetrahydropyrrolo[2,1-b]oxazol-5(6H)-one (CAS 98203-44-2)
- 1,3-Dichloro-4-methylisoquinoline (CAS 15787-23-2)
- 1-methylazepane-2-carboxylic acid hydrochloride (CAS 1214079-50-1)
- 1,9-Dihydro-2H-pyrrolo[2,3-b:4,5-c']dipyridin-2-one hydrobromide (CAS 2144740-38-3)
- 3-(2-Methylthiazole-4-carboxamido)tetrahydrothiophene-3-carboxylic acid (CAS 1496715-54-8)
- 2-Amino-4-(3-methyl-1h-pyrazol-1-yl)butanamide (CAS 1339246-88-6)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
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