11-Chlorobenzo[4,5]thieno[3,2-b]quinoline CAS 35771-74-5
| CAS No. | 35771-74-5 |
| Molecular Formula | C15H8ClNS |
| Molecular Weight | 269.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 11-Chlorobenzo[4,5]thieno[3,2-b]quinoline.
11-Chlorobenzo[4,5]thieno[3,2-b]quinoline (CAS 35771-74-5), molecular formula C15H8ClNS and molecular weight 269.75 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H8ClNS, 11-Chlorobenzo[4,5]thieno[3,2-b]quinoline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 269.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 11-Chlorobenzo[4,5]thieno[3,2-b]quinoline 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 | C15H8ClNS |
| Molecular Weight | 269.75 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 2-(((7-Chlorobenzo[b]thiophen-3-yl)methyl)(ethyl)amino)ethan-1-ol (CAS 337469-26-8)
- 5-Chlorobenzo[c][1,2,5]thiadiazole-4-sulfonyl chloride (CAS 100130-48-1)
- 1-(6-Chlorobenzo[d]thiazol-2-yl)azetidine-3-carboxylic acid (CAS 1283107-95-8)
- 1-(4-Chlorobenzo[d]thiazol-2-yl)azetidine-3-carboxylic acid (CAS 1283109-14-7)
- (4-(5-Chlorobenzo[d]oxazol-2-yl)morpholin-2-yl)methanamine (CAS 1035840-13-1)
- 6-Chlorobenzo[b]thiophene-3-sulfonyl chloride (CAS 1593831-66-3)
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Recommended Standards
- (2-Amino-4-(methoxycarbonyl)phenyl)boronicacid (CAS 935845-20-8)
- 2-Chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-methoxyethyl)acetamide (CAS 877964-32-4)
- tert-butyl (2S)-1-(chlorosulfonyl)pyrrolidine-2-carboxylate (CAS 1955473-63-8)
- 3-(((5-Chloro-2-methylphenyl)amino)methyl)-2-thioxoimidazolidin-4-one (CAS 437710-50-4)
- 7-Chloro-N-(4-methylbenzyl)quinazolin-4-amine (CAS 477861-84-0)
- Tert-butyl 2-(1-(cyclopentylimino)propyl)hydrazine-1-carboxylate (CAS 1053657-10-5)
- R-(-)-Rolipram (CAS 85416-75-7)
- (2R,3S)-4-benzyl-2-methylmorpholine-3-carboxylic acid (CAS 1932181-24-2)
- (9S)-10,11-Dihydrocinchonan-6',9-diol (CAS 73522-75-5)
- 2-([1,1'-Biphenyl]-2-ylethynyl)aniline (CAS 1236003-93-2)
- 1-(1,4-Benzodioxan-2-ylcarbonyl)piperazine-d8 (CAS 1006717-20-9)
- 2,3,5-Trimethylpyrazine (CAS 14667-55-1)
- 3-(4-Chlorophenyl)tetrahydro-2H-pyran (CAS 1467061-91-1)
- Des-Pro36-Tirzepatide (CAS CATO-CPTD788937)
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