4-Methyl-6-thioxo-1,6-dihydropyridine-3-carboxylic acid CAS 1355180-45-8
| CAS No. | 1355180-45-8 |
| Molecular Formula | C7H7NO2S |
| Molecular Weight | 169.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Methyl-6-thioxo-1,6-dihydropyridine-3-carboxylic acid (CAS 1355180-45-8) is a high-purity analytical reference standard with the molecular formula C7H7NO2S and a molecular weight of 169.20 g/mol.
Based on its molecular formula C7H7NO2S, 4-Methyl-6-thioxo-1,6-dihydropyridine-3-carboxylic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 169.20 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).
As a certified reference material (CRM), 4-Methyl-6-thioxo-1,6-dihydropyridine-3-carboxylic acid 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 | C7H7NO2S |
| Molecular Weight | 169.20 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.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Thioxo-2,3,6,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidin-4(5H)-one (CAS 16372-06-8)
- Methyl 2-thioxo-1,2-dihydropyridine-4-carboxylate (CAS 74470-33-0)
- 4-Thioxo-1,3,4,5,6,7-hexahydro-2H-cyclopenta[d]pyrimidin-2-one (CAS 21582-62-7)
- N-(6-thioxo-1,6-dihydropyridin-3-yl)acetamide (CAS 27885-57-0)
- Methyl 5-thioxo-4,5-dihydropyrazine-2-carboxylate (CAS 147032-26-6)
- 2-Methyl-4-thioxo-1,4-dihydropyrimidine-5-carboxylic acid (CAS 89640-71-1)
- 6-Acetyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 7597-77-5)
- 6-Methyl-2-thioxo-1,2-dihydropyrimidine-5-carboxylic acid (CAS 861212-78-4)
Recommended Standards
- (R)-2-Amino-3-(2-fluorophenyl)propan-1-ol (CAS 1352574-91-4)
- 5,6-Dihydro-4H-cyclopenta[d]thiazole-4-carboxylic acid (CAS 1356920-29-0)
- 3-(5-Fluoropyridin-3-yl)-2-methylpropan-1-ol (CAS 1341496-11-4)
- 2-Aminothiazolo[4,5-b]pyridin-5(4H)-one (CAS 13575-44-5)
- 1-Methyl-5-(2-nitrophenyl)-1H-pyrazole (CAS 305811-46-5)
- (6-Bromo-8-methoxyquinazolin-2-yl)methanol (CAS 2721374-66-7)
- 1-(2-Hydroxyethyl)-2,4,6-triphenylpyridin-1-ium tetrafluoroborate (CAS 1537-40-2)
- (1S,2S)-2-Isothiocyanato-N,N-dimethylcyclohexan-1-amine (CAS 1373405-22-1)
- (R)-2-((1-((Benzyloxy)carbonyl)pyrrolidin-3-yl)(methyl)amino)acetic acid (CAS 1353995-24-0)
- 1,5-Diamino-2,6-dibromo-4,8-dihydroxyanthracene-9,10-dione (CAS 30787-41-8)
- 4-((3R,5aS,6R,8aS,9R,10R,12R,12aR)-3,6,9-Trimethyldecahydro-12H-3,12-epoxy[1,2]dioxepino[4,3-i]isochromen-10-yl)thiomorpholine 1,1-dioxide (CAS 255730-18-8)
- 2-(4-Chlorophenyl)-1-oxo-1,2-dihydroisoquinoline-4-carboxylic acid (CAS 78364-19-9)
- 5-Bromo-7-fluoro-3,4-dihydronaphthalen-2(1H)-one (CAS 1336954-16-5)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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