Methyl 4-amino-3-(methylthio)benzoate CAS 634602-34-9
| CAS No. | 634602-34-9 |
| Molecular Formula | C9H11NO2S |
| Molecular Weight | 197.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 4-amino-3-(methylthio)benzoate (CAS 634602-34-9) is a high-purity analytical reference standard with the molecular formula C9H11NO2S and a molecular weight of 197.25 g/mol.
Methyl 4-amino-3-(methylthio)benzoate (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. 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.
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 | 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.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- n-(2-Fluorobenzyl)-3-methoxypropan-1-amine (CAS 931992-20-0)
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- Dabigatran Etexilate Impurity 84 (CAS 175867-55-7)
- N-[2-(Hydrazinecarbonyl)thiophen-3-yl]-N-methylbenzenesulfonamide (CAS 1325305-55-2)
- Methyl 2-amino-6-(aminomethyl)isonicotinate (CAS 1393582-02-9)
- 4-(DIBROMOMETHYL)-2-FLUOROBENZONITRILE (CAS 440105-58-8)
- (3S,3AR)-hexahydro-2H-isoxazolo[2,3-a]pyridine-3-carbaldehyde (CAS 116721-87-0)
- 2-Fluoroisonicotinohydrazide (CAS 369-24-4)
- 2,6-Dichloro-N-methylbenzenesulfonamide (CAS 19818-11-2)
- 4-Isopropyl-3-methylaniline hydrochloride (CAS 4534-11-6)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
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