4-Cyclopropoxy-2-(methylthio)nicotinic acid CAS 1243468-71-4
| CAS No. | 1243468-71-4 |
| Molecular Formula | C10H11NO3S |
| Molecular Weight | 225.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4-Cyclopropoxy-2-(methylthio)nicotinic acid (CAS 1243468-71-4), molecular formula C10H11NO3S and molecular weight 225.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Cyclopropoxy-2-(methylthio)nicotinic acid (C10H11NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 225.26 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C10H11NO3S |
| Molecular Weight | 225.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Cyclopropoxy Standards
- (2-Cyclopropoxy-3-nitrophenyl)(methyl)sulfane (CAS 1243321-01-8)
- 4-Cyclopropoxy-5-(methylthio)picolinic acid (CAS 1243321-09-6)
- 3-Cyclopropoxy-5-(methylthio)isonicotinic acid (CAS 1243321-22-3)
- (3-Cyclopropoxy-2-nitrophenyl)(methyl)sulfane (CAS 1243355-29-4)
- (2-Cyclopropoxy-6-nitrophenyl)(methyl)sulfane (CAS 1243362-11-9)
- (5-Cyclopropoxy-2-nitrophenyl)(methyl)sulfane (CAS 1243378-94-0)
- 4-Cyclopropoxy-6-(methylthio)picolinic acid (CAS 1243384-05-5)
- (4-Cyclopropoxy-3-nitrophenyl)(methyl)sulfane (CAS 1243384-33-9)
Recommended Standards
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- (2-Cyclopropoxy-5-nitrophenyl)(methyl)sulfane (CAS 1243467-47-1)
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- Bis(acetylacetonato)dimethylstannane (CAS 16925-15-8)
- tert-Butyl 2-(5-methylpyridin-3-yl)pyrrolidine-1-carboxylate (CAS 1253523-00-0)
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