4-Amino-2-methoxy-5-(methylthio)benzoic Acid CAS 71675-98-4
| CAS No. | 71675-98-4 |
| Molecular Formula | C9H11NO3S |
| Molecular Weight | 213.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Amino-2-methoxy-5-(methylthio)benzoic Acid (CAS 71675-98-4), a certified reference material (molecular formula C9H11NO3S, MW 213.25 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-Amino-2-methoxy-5-(methylthio)benzoic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 213.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Amino-2-methoxy-5-(methylthio)benzoic 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 | C9H11NO3S |
| Molecular Weight | 213.25 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 2-Amino-4-methoxy-5-(methylsulfanyl)benzoic acid (CAS 1258640-52-6)
- Methyl 6-amino-3,4-dihydro-2H-thieno[2,3-b]pyran-5-carboxylate (CAS 1372985-72-2)
- 2-Amino-1-(3-(methylsulfonyl)phenyl)ethan-1-one (CAS 1523137-54-3)
- 6-amino-2,3-dihydro-1H-indene-5-sulfonic acid (CAS 36125-91-4)
- 7-Amino-8-hydroxythiochroman 1,1-dioxide (CAS 2647465-26-5)
- Methyl 2-Amino-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate (CAS 258353-46-7)
- 3-Amino-5-(p-tolylamino)-1H-pyrazole-4-carbonitrile (CAS 101476-79-3)
- 3-(5-Amino-3-phenyl-1H-1,2,4-triazol-1-yl)propanenitrile (CAS 1072106-46-7)
Recommended Standards
- 4-acetyl-N-methylbenzenesulfonamide (CAS 68793-19-1)
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- 4-Methyl-N-(methylsulfonyl)benzamide (CAS 827624-81-7)
- 4-(1H-pyrazol-4-yl)butanenitrile (CAS 84302-84-1)
- 65799-47-5 A835230 dimethoxy-methyl-[3-(2-oxiranylmethoxy)propyl]silane dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane (CAS 65799-47-5)
- (5Z)-5-[(2E)-2-Methyl-3-phenyl-2-propen-1-ylidene]-4-oxo-2-thioxo-3-thiazolidinepropanoic acid (CAS 1800597-49-2)
- 4-Ethynylpiperidin-4-ol (CAS 134701-51-2)
- 2,3,4,5-Tetrabromobenzoic Acid (CAS 27581-13-1)
- 1,3-Dibromo-5-fluoro-2-isopropoxybenzene (CAS 1224604-19-6)
- 1209459-63-1 2-Chloro-3-(1-pyrrolidinyl)pyrazine MFCD14702671 (CAS 1209459-63-1)
- 519-57-3 8NA53C271Z Sulochrin Benzoic acid, 2-(2,6-dihydroxy-4-methylbenzoyl)-5-hydroxy-3-methoxy-, methyl ester UNII-8NA53C271Z (CAS 519-57-3)
- 2-Amino-2-(5-bromo-1H-indol-3-yl)acetic acid (CAS 1270311-06-2)
- Biotinyl-Neuropeptide W-23 (human) (CAS 1815618-09-7)
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