3-(Ethylthio)-5-methylpicolinic acid CAS 1956365-75-5
| CAS No. | 1956365-75-5 |
| Molecular Formula | C9H11NO2S |
| Molecular Weight | 197.25 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 3-(Ethylthio)-5-methylpicolinic acid.
3-(Ethylthio)-5-methylpicolinic acid (CAS 1956365-75-5), molecular formula C9H11NO2S and molecular weight 197.25 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Ethylthio)-5-methylpicolinic acid (C9H11NO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 3-(Ethylthio)-5-methylpicolinic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H11NO2S |
| Molecular Weight | 197.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethylthio Standards
- 6-(Ethylthio)-N'-hydroxynicotinimidamide (CAS 258348-13-9)
- 3-(Ethylthio)-5-(trifluoromethyl)-1H-1,2,4-triazole (CAS 261965-28-0)
- Tris(ethylthio)methane (CAS 6267-24-9)
- 2-(4-(Ethylthio)phenyl)propan-2-ol (CAS 1379317-10-8)
- 4-(Ethylthio)-6-methyl-2-(1-methylethyl)-pyrimidine (CAS 77738-92-2)
- (Z)-4-(ethylthio)-n'-hydroxybenzimidamide (CAS 857533-94-9)
- 2-(4-(Ethylthio)phenyl)acetic acid (CAS 3583-58-2)
- 2-(Ethylthio)-1-(3-fluorophenyl)ethan-1-one (CAS 1157204-70-0)
Recommended Standards
- Methyl 5-amino-2-(methylthio)benzoate (CAS 191604-71-4)
- (2-Pyridin-2-yl-ethylsulfanyl)-acetic acid (CAS 22701-42-4)
- Ethyl4-cyclopropylthiazole-5-carboxylate (CAS 1865476-56-7)
- (3-Acetylphenyl)(imino)(methyl)-l6-sulfanone (CAS 2644824-21-3)
- Methyl 2-chloro-5-(chlorosulfonyl)-4-fluorobenzoate (CAS 1154155-49-3)
- 1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)pyrrolidin-3-amine hydrochloride (CAS 1420993-35-6)
- 2-Amino-4,5,6,7-tetrahydro-6-(propanoylamino)benzothiazole (CAS 375824-96-7)
- 5-Iodo-4-methyl-2-(trifluoromethyl)pyridine (CAS 944317-55-9)
- n-(3,4-Dimethoxyphenyl)-2-(1h-indazol-3-yl)-n-methylacetamide (CAS 1427962-22-8)
- 2-(2,3-Dichlorophenyl)pyrimidine (CAS 95573-52-7)
- (S)-1-(3,4,5-trimethoxyphenyl)butan-1-amine (CAS 1212878-99-3)
- 4-(4-methylpiperazin-1-yl)-1-(phenylsulfonyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (CAS 1203566-62-4)
- 2-Propyl-4,5-dihydrothiazole (CAS 23185-09-3)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
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