(Acetylamino)(2-thienyl)acetic acid CAS 68802-32-4
| CAS No. | 68802-32-4 |
| Molecular Formula | C8H9NO3S |
| Molecular Weight | 199.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(Acetylamino)(2-thienyl)acetic acid (CAS 68802-32-4) is a high-purity analytical reference standard with the molecular formula C8H9NO3S and a molecular weight of 199.23 g/mol.
The molecular framework of (Acetylamino)(2-thienyl)acetic acid (C8H9NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H9NO3S |
| Molecular Weight | 199.23 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.) | 1976 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (4-Methoxy-3-nitrophenyl)methanethiol (CAS 908344-21-8)
- (Phenylsulfonyl)acetamide (CAS 35008-50-5)
- (4-Formylphenyl)methanesulfonamide (CAS 2180956-66-3)
- (R)-2-Amino-3-(pyrimidin-2-ylthio)propanoic acid (CAS 35608-73-2)
- (S)-tert-Butyl 2-((2-aminoacetamido)methyl)pyrrolidine-1-carboxylate (CAS 1354008-96-0)
- 5-Chloro-6-nitrobenzo[c][1,2,5]thiadiazole (CAS 2207-33-2)
- (4S)-3-[(2R,3R)-4-Chloro-3-(2,4-difluorophenyl)-3-hydroxy-2-methyl-1-oxobutyl]-4-(phenylmethyl)-2-oxazolidinone (CAS 169218-76-2)
- Norepinephrine Impurity 96 (CAS CATO-C4X-151496)
- (1R)-1-(3-Fluoro-4-methylphenyl)ethan-1-amine hydrochloride (CAS 1820570-24-8)
- Methylene blue /Methylthioninium Chloride Impurity 25 (CAS CATO-C4X-189625)
- (1S,2S)-tert-Butyl 2-aminocyclohexanecarboxylate (CAS 188818-73-7)
- 1-{furo[3,2-c]pyridin-2-yl}ethan-1-one (CAS 1367933-93-4)
- 2-Amino-N-((1-benzylpyrrolidin-3-yl)methyl)-N-isopropylacetamide (CAS 1353953-24-8)
- C-Peptide 2 (rat) (CAS 41594-08-5)
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