5-Methoxyquinoline-8-thiol CAS 59666-03-4
| CAS No. | 59666-03-4 |
| Molecular Formula | C10H9NOS |
| Molecular Weight | 191.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Methoxyquinoline-8-thiol (CAS 59666-03-4), molecular formula C10H9NOS and molecular weight 191.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Methoxyquinoline-8-thiol (C10H9NOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. 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 191.25 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C10H9NOS |
| Molecular Weight | 191.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | 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.) | 1974 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methoxyquinoline Standards
- 4-Methoxyquinoline-8-thiol (CAS 59666-02-3)
- 6-Methoxyquinoline-8-thiol (CAS 24186-85-4)
- 7-Methoxyquinoline-2,4(1H,3H)-dione (CAS 1025796-06-8)
- 8-Methoxyquinoline-2,4(1H,3H)-dione (CAS 1228302-28-0)
- 7-Methoxyquinoline-3,4-diamine (CAS 110643-84-0)
- 6-Methoxyquinoline-5,8-diamine (CAS 61895-34-9)
- 4-Methoxyquinoline-5,8-dione (CAS 115170-26-8)
- 8-Methoxyquinoline-5,6-dione (CAS 86433-69-4)
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