2-(Thiophene-2-sulfonamido)propanoic acid CAS 82068-11-9
| CAS No. | 82068-11-9 |
| Molecular Formula | C7H9NO4S2 |
| Molecular Weight | 235.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Thiophene-2-sulfonamido)propanoic acid (CAS 82068-11-9), molecular formula C7H9NO4S2 and molecular weight 235.28 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-(Thiophene-2-sulfonamido)propanoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 235.28 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).
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.
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 | C7H9NO4S2 |
| Molecular Weight | 235.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Thiophene Standards
- 3-(Thiophene-2-sulfonamido)propanoic acid (CAS 82068-12-0)
- Methyl 5-(thiophene-2-carbonyl)furan-2-carboxylate (CAS 170632-17-4)
- Thiophene, 3,4-diphenyl- (CAS 16939-13-2)
- 2-[5-(Thiophene-2-carbonyl)thiophen-2-yl]acetonitrile (CAS 339098-98-5)
- 3-(thiophene-2-carbonyl)-3-azabicyclo[3.1.0]hexane-2-carboxylic acid (CAS 1008645-20-2)
- 1-(Thiophene-2-carbonyl)-1,2,5,6-tetrahydropyridine-3-carboxylic acid (CAS 1373247-45-0)
- 5-(Thiophene-2-sulfonyl)-1,2,3-thiadiazole (CAS 478042-67-0)
- Thiophene-2-carboxylic anhydride (CAS 25569-97-5)
Recommended Standards
- 2-(P-tolyl)-1H-indole-3-carbaldehyde (CAS 68945-00-6)
- 2,5-Dimethoxy-4-(1-pyrrolidinyl)benzaldehyde (CAS 692775-87-4)
- 2-(n-Methylthiophene-2-sulfonamido)acetic acid (CAS 706766-53-2)
- 2-[(4-tert-butylphenyl)formamido]acetic acid (CAS 87015-91-6)
- (S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxopropan-2-yl)(methyl)carbamate (CAS 170097-58-2)
- tert-Butyl (6-fluoro-4-formylpyridin-3-yl)carbamate (CAS 2442597-59-1)
- (3R)-3-(3-methylbutoxy)pyrrolidine hydrochloride (CAS 2031242-18-7)
- 3-bromo-7,8-dimethoxy-2-methyl-chromen-4-one (CAS 2813311-28-1)
- 2,4-Dichloro-5-cyclopropoxypyridine (CAS 1243327-13-0)
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