2-Hydroxy-3-iodobenzoic Acid CAS 520-79-6
| CAS No. | 520-79-6 |
| Molecular Formula | C7H5IO3 |
| Molecular Weight | 264.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 264.02 g/mol gives 2-Hydroxy-3-iodobenzoic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-Hydroxy-3-iodobenzoic Acid (CAS 520-79-6), a certified reference material (molecular formula C7H5IO3, MW 264.02 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 2-Hydroxy-3-iodobenzoic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 264.02 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Hydroxy-3-iodobenzoic Acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H5IO3 |
| Molecular Weight | 264.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
Related Hydroxy Standards
- 4-Hydroxy-2-iodobenzoic acid (CAS 116631-87-9)
- 1-Hydroxy-1,2-benziodoxol-3(1H)-one (CAS 131-62-4)
- 2-Hydroxy-6-iodobenzoic acid (CAS 89677-81-6)
- 3-Hydroxy-2-iodobenzoic acid (CAS 75821-44-2)
- 3-Hydroxy-5-iodobenzoic acid (CAS 50765-21-4)
- 4-Hydroxy-3-iodobenzoic acid, 97% (CAS 37470-46-5)
- 5-Hydroxy-2-iodobenzoic Acid (CAS 57772-57-3)
- 4-Hydroxy-4,4-diphosphonobutanoic acid (CAS 70794-95-5)
Recommended Standards
- 2-Amino-5-iodonicotinic acid (CAS 54400-30-5)
- 2,4-Dihydroxy-3-iodobenzaldehyde (CAS 82954-52-7)
- 2-Iodo-3-methyl-5-nitropyridine (CAS 49767-15-9)
- (2-Bromoethyl)(phenyl)selane (CAS 50630-23-4)
- Piperidin-4-yl-(1-pyridin-2-yl-ethyl)-amine hydrochloride (CAS 1289689-35-5)
- 3-(2H-1,2,3-Triazol-2-yl)-8-azabicyclo[3.2.1]octane hydrochloride (CAS 1820615-78-8)
- 4,4-Diethylpiperidine Hydrochloride (CAS 3970-65-8)
- 4-((2-Fluorobenzyl)oxy)-3-iodobenzoic acid (CAS 1131614-94-2)
- Methyl 4-hydrazinyl-3-methoxybenzoate (CAS 952285-55-1)
- 5-(3-Chloro-2-fluorophenoxy)pentanenitrile (CAS 1443342-58-2)
- 2-(5-Methylfuran-2-yl)aniline (CAS 400750-84-7)
- Ifosfamide EP Impurity F (CAS 81485-04-3 & 40722-73-4)
- 4-[(Dimethylamino)methyl]-2-methoxyphenol (CAS 19861-69-9)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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