4-((5-(Ethoxycarbonyl)-4-methylthiazol-2-yl)amino)-4-oxobutanoic acid CAS 354547-55-0
| CAS No. | 354547-55-0 |
| Molecular Formula | C11H14N2O5S |
| Molecular Weight | 286.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-((5-(Ethoxycarbonyl)-4-methylthiazol-2-yl)amino)-4-oxobutanoic acid (CAS 354547-55-0), molecular formula C11H14N2O5S and molecular weight 286.30 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-((5-(Ethoxycarbonyl)-4-methylthiazol-2-yl)amino)-4-oxobutanoic acid (C11H14N2O5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 286.30 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H14N2O5S |
| Molecular Weight | 286.30 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethoxycarbonyl Standards
- 2-((4-(Ethoxycarbonyl)phenyl)amino)nicotinic acid (CAS 16344-34-6)
- 3,5-Bis(ethoxycarbonyl)-4-methyl-1H-pyrrole-2-carboxylic acid (CAS 37789-75-6)
- 4-((4-(Ethoxycarbonyl)pyridin-2-yl)oxy)benzoic acid (CAS 1415719-43-5)
- 3-((4-(Ethoxycarbonyl)pyridin-2-yl)oxy)benzoic acid (CAS 1415719-71-9)
- 2-[4-(ethoxycarbonyl)benzenesulfonamido]acetic acid (CAS 757192-76-0)
- 2-({[1-(ethoxycarbonyl)piperidin-4-yl]carbamoyl}(methyl)amino)acetic acid (CAS 1096963-05-1)
- 1-(Ethoxycarbonyl)-2,3,4,9-tetrahydro-1H-carbazole-8-carboxylic acid (CAS 352549-26-9)
- 2-(3-(Ethoxycarbonyl)-2-methyl-5-phenyl-1H-pyrrol-1-yl)acetic acid (CAS 679797-47-8)
Recommended Standards
- 3-Oxo-2-(thiophen-2-ylmethylene)-2,3-dihydrobenzofuran-6-yl acetate (CAS 622822-72-4)
- 4,4-Dimethyl-3-((4-nitrophenyl)sulfonyl)oxazolidine (CAS 866157-30-4)
- 3-{[4-(2-ethoxy-2-oxoethyl)-1,3-thiazol-2-yl]carbamoyl}propanoic acid (CAS 342022-07-5)
- 4-[(2-Methyl-5-nitrobenzene)sulfonyl]morpholine (CAS 91215-03-1)
- 1-(6-Methoxy-3-pyridinyl)ethanamine (CAS 579515-25-6)
- Ethyl 2-(n-methylformamido)acetate (CAS 89531-66-8)
- Z-Ala-ONp (CAS 1168-87-2)
- 3-Methoxy-6-methylquinoline (CAS 592479-09-9)
- 1-(2,6-Difluorophenyl)cyclopropanecarbonitrile (CAS 124276-65-9)
- 1-(Hydroxymethyl)cyclobutanol (CAS 6970-72-5)
- 2-(2-Fluorophenyl)pyrimidine-5-carboxaldehye (CAS 946707-17-1)
- 4-Hydroxy-3-(trifluoromethoxy)benzonitrile (CAS 1093397-72-8)
- 2-Methyl-N-neopentylcyclohexan-1-amine (CAS 1251058-82-8)
- C-Peptide (human) (CAS 33017-11-7)
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