(E)-2-(2,3-dihydro-1H-inden-1-ylidene)acetic acid CAS 4709-52-8
| CAS No. | 4709-52-8 |
| Molecular Formula | C11H10O2 |
| Molecular Weight | 174.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (E)-2-(2,3-dihydro-1H-inden-1-ylidene)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.20 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.
(E)-2-(2,3-dihydro-1H-inden-1-ylidene)acetic acid (CAS 4709-52-8), molecular formula C11H10O2 and molecular weight 174.20 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.
CATO manufactures (E)-2-(2,3-dihydro-1H-inden-1-ylidene)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 | C11H10O2 |
| Molecular Weight | 174.20 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.) | 1958 |
Related E Standards
- 2-(2,3-Dihydro-1H-inden-5-yl)-2-oxoacetaldehyde (CAS 10188-66-6)
- 6-Acetyl-2,3-dihydro-1H-inden-1-one (CAS 103987-99-1)
- 2,3-Dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-1-ol (CAS 137076-20-1)
- 2,3-Dihydro-6-methyl-1,4-naphthalenedione (CAS 162900-27-8)
- 4-Methyl-5,6-dihydro-4H-pyrrolo[3,2,1-de]pteridine (CAS 172982-69-3)
- (4,5-Dihydro-1H-pyrazol-1-yl)(phenyl)methanone (CAS 900188-90-1)
- 1,4-Dihydro-1,4-methanonaphthalene-5,8-diol (CAS 3090-47-9)
- 1,4-dihydro-Naphthoic Acid (CAS 5111-73-9)
Recommended Standards
- (E)-1-methyl-1H-indole-3-carbaldehyde oxime (CAS 40747-06-6)
- (E)-3-Benzylidenedihydrofuran-2(3H)-one (CAS 30959-91-2)
- (Butylcarbamoyl)glycine (CAS 63059-33-6)
- (E)-4-(3-oxobut-1-en-1-yl)benzaldehyde (CAS 802954-26-3)
- tert-Butyl 2,2-dihydroxyacetate (CAS 73633-07-5)
- n'-Hydroxy-3-(pyridin-3-ylmethoxy)benzene-1-carboximidamide (CAS 1016731-81-9)
- 4-Bromo-2-ethylpyridazin-3(2H)-one (CAS 1896752-72-9)
- 2,8-Dimethylquinolin-4(1H)-one (CAS 52481-91-1)
- 1-(Difluoromethyl)-3-(propoxymethyl)-1H-pyrazole (CAS 1855940-32-7)
- methyl 4-(4-methoxy-3,3-dimethyl-but-1-ynyl)benzoate (CAS 2555022-68-7)
- 1,4-Dichloro-2-fluoro-3-(trifluoromethyl)benzene (CAS 1221272-84-9)
- 2-(5-Methyl-1H-pyrazol-3-yl)pyridine (CAS 19959-77-4)
- 1-[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-5-(hydroxymethyl)-3-iodo-tetrahydrofuran-2-yl]pyrimidine-2,4-dione (CAS 2242694-22-8)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
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