3-Indolyl-Acetic Acid CAS 87-51-4
| CAS No. | 87-51-4 |
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Indolyl-Acetic Acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Indolyl-Acetic Acid (CAS 87-51-4), molecular formula C10H9NO2 and molecular weight 175.18 g/mol, is a CATO reference standard with documented purity and traceability.
3-Indolyl-Acetic Acid (C10H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 3-Indolyl-Acetic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| 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.) | 1957 |
| Nitrogen Atoms | 1 |
Related Indolyl Standards
- 3-Indolyl Acetate (CAS 608-08-2)
- 3-(5-Methyl-3-indolyl)-1-propanamine (CAS 586336-25-6)
- 3-(7-Methyl-3-indolyl)-1-propanamine (CAS 34572-17-3)
- (1-Methyl-6-indolyl)methanol (CAS 199590-00-6)
- 3-(3-Indolyl)-Propionic Acid (CAS 830-96-6)
- 2-(5-Indolyl)acetonitrile (CAS 23690-49-5)
- 3-Indolyl-Acetonitrile (CAS 771-51-7)
- 3-(5-Methyl-3-indolyl)propanamide (CAS 54904-28-8)
Recommended Standards
- DL-2-Aminopimelic Acid (CAS 627-76-9)
- Calystegine B2 (CAS 127414-85-1)
- Lornoxicam Impurity 76 (CAS 40418-38-0)
- Calystegine B3 (CAS 178231-95-3)
- (R)-4-Isopropyl-1,2,3,4-tetrahydroisoquinoline (CAS 350508-61-1)
- 3-{4-[2-(1-Naphthyloxy)acetyl]-1-piperazinyl}-3-oxopropanoic acid (CAS 896508-17-1)
- n-Methyl-2-[2-(methylamino)ethoxy]acetamide hydrochloride (CAS 1354953-86-8)
- 5-(4-Bromothiophen-2-yl)imidazolidine-2,4-dione (CAS 1339602-34-4)
- 7-(Trifluoromethoxy)-1H-indazole-4-carbaldehyde (CAS 1956378-88-3)
- 2,4-Dichlorophenylhydrazine hydrochloride 1-(2,4-dichlorophenyl)hydrazine hydrochloride 2,4-dichlorophenylhydrazine hcl (2,4-dichloro-phenyl)-hydrazine hydrochloride 5446-18-4 (CAS 5446-18-4)
- tert-butyl 3-amino-4-bromobenzoate (CAS 1249648-03-0)
- Fmoc-Arg(Me)2-OH (symmetrical) (CAS 823780-66-1)
- N-(2,6-Dihydroxypyrimidin-4-yl)-1H-1,2,4-triazole-3-carboxamide (CAS 709018-26-8)
- Liraglutide-d8 Tetratrifluoroacetate (CAS 204656-20-2 (non-labelled, free base))
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