3-(1H-Indol-3-yl)-2-mercaptopropanoic acid CAS 27266-99-5
| CAS No. | 27266-99-5 |
| Molecular Formula | C11H11NO2S |
| Molecular Weight | 221.28 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.
CATO supplies 3-(1H-Indol-3-yl)-2-mercaptopropanoic acid (CAS 27266-99-5), a certified reference material (molecular formula C11H11NO2S, MW 221.28 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, 3-(1H-Indol-3-yl)-2-mercaptopropanoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 221.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H11NO2S |
| Molecular Weight | 221.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related H Standards
- 2-(((1H-Indol-3-yl)methyl)thio)acetic acid (CAS 60122-35-2)
- 2-((1H-Indol-3-yl)thio)propanoic acid (CAS 63321-71-1)
- 3-((1H-indol-3-yl)thio)propanoic acid (CAS 80412-20-0)
- (1H-Indol-1-yl)(phenyl)methanone (CAS 1496-76-0)
- (1H-indol-3-yl)(phenyl)methanone (CAS 15224-25-6)
- 2-[2-(1H-Indol-4-yloxy)ethoxy]ethan-1-ol (CAS 477862-51-4)
- 3-(1H-Indol-5-yl)benzaldehyde (CAS 210888-94-1)
- 4-(1H-Indol-5-yl)benzaldehyde (CAS 893736-21-5)
Recommended Standards
- 3-(1h-Pyrrol-1-yl)-3-(thiophen-3-yl)propanoic acid (CAS 866019-33-2)
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- 3-(2,6-Dimethylphenyl)-1,3-thiazolidine-2,4-dione (CAS 303985-14-0)
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- (4-(3-Fluorophenyl)-1H-indol-3-yl)-N,N-dimethylmethanamine (CAS 1214391-13-5)
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- 3-Butoxy-4-chlorobenzoic acid (CAS 1280786-97-1)
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- 1-Boc-2,3-dimethylpiperazine (CAS 886780-49-0)
- (1S,6R)-3-Boc-7-[(R)-1-phenylethyl]-3,7-diazabicyclo[4.2.0]octane (CAS 1820574-76-2)
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- (2-Chlorophenyl)(3-fluoro-4-methylphenyl)methanone (CAS 951886-15-0)
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