89-51-0 Homophthalic acid Benzeneacetic acid, 2-carboxy- (2-Carboxyphenyl)acetic acid o-Toluic acid, alpha-carboxy- (8CI) 4-09-00-03343 (Beilstein Handbook Reference) BRN 1872069 2-Carboxybenzeneacetic acid (o-Carboxymethyl)benzoic acid alpha-Carboxy-o-toluic acid EINECS 201-913-9 NSC 15185 Toluene-alpha,2-dicarboxylic acid o-Toluic acid, alpha-carboxy- CAS 89-51-0
| CAS No. | 89-51-0 |
| Molecular Formula | C9H14O4 |
| Molecular Weight | 186.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 89-51-0 Homophthalic acid Benzeneacetic acid, 2-carboxy- (2-Carboxyphenyl)acetic acid o-Toluic acid, alpha-carboxy- (8CI) 4-09-00-03343 (Beilstein Handbook Reference) BRN 1872069 2-Carboxybenzeneacetic acid (o-Carboxymethyl)benzoic acid alpha-Carboxy-o-toluic acid EINECS 201-913-9 NSC 15185 Toluene-alpha,2-dicarboxylic acid o-Toluic acid, alpha-carboxy- (CAS 89-51-0), a certified reference material (molecular formula C9H14O4, MW 186.21 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 89-51-0 Homophthalic acid Benzeneacetic acid, 2-carboxy- (2-Carboxyphenyl)acetic acid o-Toluic acid, alpha-carboxy- (8CI) 4-09-00-03343 (Beilstein Handbook Reference) BRN 1872069 2-Carboxybenzeneacetic acid (o-Carboxymethyl)benzoic acid alpha-Carboxy-o-toluic acid EINECS 201-913-9 NSC 15185 Toluene-alpha,2-dicarboxylic acid o-Toluic acid, alpha-carboxy- is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 186.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H14O4 |
| Molecular Weight | 186.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
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