1-(1-(tert-Butoxycarbonyl)indolin-5-yl)cyclobutane-1-carboxylic acid CAS 1891793-85-3
| CAS No. | 1891793-85-3 |
| Molecular Formula | C18H23NO4 |
| Molecular Weight | 317.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-(1-(tert-Butoxycarbonyl)indolin-5-yl)cyclobutane-1-carboxylic acid (C18H23NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 317.38 g/mol, it falls into the moderately-high-molecular-weight range. 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).
1-(1-(tert-Butoxycarbonyl)indolin-5-yl)cyclobutane-1-carboxylic acid (CAS 1891793-85-3), molecular formula C18H23NO4 and molecular weight 317.38 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C18H23NO4 |
| Molecular Weight | 317.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 1 |
Related tert Standards
- 1-(1-(Tert-butoxycarbonyl)-1,2,3,4-tetrahydroquinolin-6-yl)cyclopropane-1-carboxylic acid (CAS 1898351-36-4)
- 1-(4-((Tert-butoxycarbonyl)amino)benzyl)-1H-imidazole-5-carboxylic acid (CAS 1355229-12-7)
- N-((Butoxycarbonyl)oxy)-2-(quinolin-8-yloxy)acetimidamide (CAS 88758-42-3)
- (1-(tert-Butoxycarbonyl)-2,2,4-trimethyl-1,2-dihydroquinolin-6-yl)boronic acid (CAS 179894-36-1)
- 2-((Tert-butoxycarbonyl)amino)-3-(3-chloro-2-fluorophenyl)propanoic acid (CAS 1260010-17-0)
- 6-(tert-Butoxycarbonyl)-2-chloro-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylic acid (CAS 2138373-28-9)
- (1-(tert-butoxycarbonyl)-5-((dimethylamino)methyl)-1H-indol-2-yl)boronic acid (CAS 913388-74-6)
- 1-(3-((Tert-butoxycarbonyl)amino)propyl)-1H-indole-6-carboxylic acid (CAS 1005378-70-0)
Recommended Standards
- Tris(4-ethynylphenyl)amine (CAS 189178-09-4)
- 5-(tert-Butyl)1-methyl(tert-Butoxycarbonyl)-l-glutamate (CAS 18635-51-3)
- 4-(Biphenyl-4-yl)-DL-phenylalanine (CAS 1946843-02-2)
- Di-tert-butyl 1H-indole-1,6-dicarboxylate (CAS 1823244-46-7)
- 2,5-Dibromo-3,4,6-trifluorophenol (CAS 5510-39-4)
- Fmoc-Tyr(2-bromo-Z)-OH (CAS 147688-40-2)
- 4-(Methoxycarbonyl)-3,5-dimethyl-1h-pyrrole-2-carboxylic acid (CAS 50296-60-1)
- 3-(3-Fluorophenyl)-3h-[1,2,3]triazolo[4,5-d]pyrimidine-7-thiol (CAS 1082499-62-4)
- Yttriumoxalatetetrahydrate (CAS 867-68-5)
- 1-(4-Sulfanylphenyl)ethan-1-ol (CAS 77069-55-7)
- 5-(2,4-Dimethylpyrimidin-5-yl)-1,3,4-oxadiazole-2(3H)-thione (CAS 88317-49-1)
- 2-[(2-Aminoethyl)sulfanyl]benzoic acid (CAS 73762-44-4)
- (S)-N-(1-(2-Chloroacetyl)pyrrolidin-3-yl)-N-isopropylacetamide (CAS 1354010-31-3)
- Semaglutide impurity 270 (CAS CATO-C4X-2226270)
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