(2,5,7-Trimethyl-1h-indol-3-yl)acetic acid CAS 91957-25-4
| CAS No. | 91957-25-4 |
| Molecular Formula | C13H15NO2 |
| Molecular Weight | 217.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of (2,5,7-Trimethyl-1h-indol-3-yl)acetic acid (C13H15NO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
(2,5,7-Trimethyl-1h-indol-3-yl)acetic acid (CAS 91957-25-4) is a high-purity analytical reference standard with the molecular formula C13H15NO2 and a molecular weight of 217.26 g/mol.
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 | C13H15NO2 |
| Molecular Weight | 217.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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.) | 1983 |
| Nitrogen Atoms | 1 |
Related Trimethyl Standards
- 2,2,4-TRimethyl-1,2-dihydro-quinoline-6-carboxylic acid (CAS 1260741-03-4)
- 2-(2,4,6-Trimethyl-1H-indol-3-yl)acetic acid (CAS 6949-71-9)
- 2-(2,4,7-Trimethyl-1H-indol-3-yl)acetic acid (CAS 5435-43-8)
- 2-(2,6,7-Trimethyl-1H-indol-3-yl)acetic acid (CAS 6949-72-0)
- 2,2,4-Trimethyl-1,2-dihydroquinoline-8-carboxylic acid (CAS 941266-27-9)
- Methyl 4,6,7-trimethyl-1H-indole-2-carboxylate (CAS 900640-50-8)
- 1,2,3-Trimethyl-1H-indole-5-carbohydrazide (CAS 406189-60-4)
- 1,6,8-Trimethyl-1,6-dihydrodipyrazolo[3,4-b:3',4'-d]pyridin-3(2H)-one (CAS 81153-35-7)
Recommended Standards
- (1S,2S)-(+)-2-Benzyloxycyclopentyl isocyanate (CAS 745783-70-4)
- (2e)-3-(1-Methyl-1,2,3,4-tetrahydroquinolin-6-yl)prop-2-enoic acid (CAS 68032-00-8)
- (1R,2R)-1-Benzyloxy-2-isocyanatocyclopentane (CAS 737001-14-8)
- (2S,4R)-4-Hydroxy-2-(hydroxymethyl)-1-pyrrolidinecarboxylic Acid tert-Butyl Ester (CAS 61478-26-0)
- 7-Chloro-3-methyl-1H-indazole (CAS 1378582-62-7)
- N'-methyl-N'-(3-phenyl-6-(trifluoromethyl)-1,2,4-triazin-5-yl)pivalohydrazide (CAS 672951-04-1)
- 7-Benzyl-[1,2,4]triazolo[4,3-a]pyrazine-3,8(2H,7H)-dione (CAS 1713173-82-0)
- 6-Ethoxy-1-ethyl-3,3-dimethylindoline (CAS 141315-04-0)
- 8-((5-Bromo-2-methoxyphenyl)sulfonyl)-1,4-dioxa-8-azaspiro[4.5]Decane (CAS 1296556-64-3)
- (2R,6R)-tert-Butyl 2,6-dimethyl-4-oxopiperidine-1-carboxylate (CAS 1821774-86-0)
- Levocetirizine Impurity 55 (CAS 705289-61-8)
- 3-(5-methylpyridin-2-yl)prop-2-enoic acid (CAS 1198101-54-0)
- 2-(4-Chlorophenyl)-5,5'-dimethyl-2'-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one (CAS 245039-25-2)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com