2-Acetyl-5-chlorobenzoic acid CAS 115382-34-8
| CAS No. | 115382-34-8 |
| Molecular Formula | C9H7ClO3 |
| Molecular Weight | 198.60 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.
2-Acetyl-5-chlorobenzoic acid (CAS 115382-34-8), molecular formula C9H7ClO3 and molecular weight 198.60 g/mol, is a CATO reference standard with documented purity and traceability.
2-Acetyl-5-chlorobenzoic acid (C9H7ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7ClO3 |
| Molecular Weight | 198.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
Related Acetyl Standards
- 4-Acetyl-2-chlorobenzoic acid (CAS 115382-35-9)
- 3-Acetyl-5-chlorobenzoic acid (CAS 1393566-58-9)
- 2-Acetyl-4-chlorobenzoic acid (CAS 1664338-78-6)
- 3-Acetyl-4-chlorobenzoic acid (CAS 258273-35-7)
- 4-Acetyl-3-chlorobenzoic acid (CAS 57542-72-0)
- 5-Butyl-2-chlorobenzoic acid (CAS 1237071-48-5)
- 4-Chlorobenzoic acid-α-<SUP>13</SUP>C (CAS 138534-66-4)
- 4-Chlorobenzoic acid-phenyl-<SUP>13</SUP>C<SUB>6</SUB> (CAS 1173019-28-7)
Recommended Standards
- 3-(4-Chlorophenyl)oxirane-2-carboxylic acid (CAS 114380-31-3)
- Methyl 2-chloro-6-formyl-benzoate (CAS 1086391-95-8)
- 5-(2-Chloroacetyl)-2-hydroxybenzaldehyde (CAS 115787-51-4)
- 5-chloro-2,3-dihydro-1-benzofuran-7-carboxylic acid (CAS 108551-58-2)
- 1-(2-Bromophenyl)cyclohexan-1-ol (CAS 255837-16-2)
- 7-Methoxy-2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phthalazin-1(2H)-one (CAS 2761059-14-5)
- 7-(Difluoromethoxy)-1H-indole (CAS 1315362-68-5)
- Buformin Hydrochloride (CAS 1190-53-0)
- Boc-(+/-)-trans-4-(3-trifluoromethyl-phenyl)-pyrrolidine-3-carboxylic acid (CAS 169248-97-9)
- Imidazo[1,2-a]pyridine-2-acetic Acid Hydrochloride (CAS 127657-47-0)
- 1-(3,4-dichlorobenzyl)-3-methyl-4-pivaloyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 1009248-84-3)
- Afoxolaner Impurity 14 (CAS 1125726-30-8)
- 5-(3,4-Difluorophenyl)pyrimidin-2-ol (CAS 1111108-31-6)
- Semaglutide (CAS 910463-68-2)
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