3-Chloro-5-ethynylbenzoic acid CAS 1862985-95-2
| CAS No. | 1862985-95-2 |
| Molecular Formula | C9H5ClO2 |
| Molecular Weight | 180.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Chloro-5-ethynylbenzoic acid.
CATO supplies 3-Chloro-5-ethynylbenzoic acid (CAS 1862985-95-2), a certified reference material (molecular formula C9H5ClO2, MW 180.59 g/mol) for analytical method development and quality control.
3-Chloro-5-ethynylbenzoic acid (C9H5ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 3-Chloro-5-ethynylbenzoic 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 | C9H5ClO2 |
| Molecular Weight | 180.59 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 8-Chloro-1,5-naphthyridin-2(1H)-one (CAS 1092650-94-6)
- 5-Chloro-1H-indazole-7-carbaldehyde (CAS 1100213-27-1)
Recommended Standards
- 4-Chloro-3-ethynylbenzoic acid (CAS 1862985-70-3)
- 5-Chloro-2-ethynylbenzoic acid (CAS 1864322-49-5)
- 4-Chloro-2-ethynylbenzoic acid (CAS 1862529-66-5)
- 3-Chloro-4-ethynylbenzoic acid (CAS 1866562-06-2)
- 09Y8E6164A 1S66E28KXA 2E9U4Y94DB G6DQL26D50 IS93EQR73R JT3U72U71K JX0HIX6OAG LQA7B6G8JG PLU8QA2TOV TUF2IVW3M2 BIS92ZSF57 0R79529H48 40YKA808KW 66EV99AS9E 73V0D3O1FP 7YLA84208M 91B7KU0JTI 5Z46X21X7I B9Y8J911BV YWJ6837FL1 V8B3K56SW0 F75JV2T505 NZ1V84NDF9 KDW7VYE2Z8 64CHX343Y8 5K7JD3ELD7 JO9JD7WJ20 QDJ29LOA3J J2R38TWT27 E3JZI5G4RX UMG50ZW8UY CU4K26HG21 58SFJ9RW21 6SG11EPD3Z PH86TYV5Y9 3O0G38UT27 M1X5Y5T2QD XPP85ZHV76 691397-13-4 UNII-G6DQL26D50 UNII-TUF2IVW3M2 UNII-IS93EQR73R UNII-JT3U72U71K UNII-JX0HIX6OAG UNII-LQA7B6G8JG UNII-PLU8QA2TOV UNII-09Y8E6164A Oxirane, 2-methyl-, polymer with oxirane, triblock Ethylene glycol-propylene glycol copolymer triblock ExpertGel 56 Adeka Pluronic L 101 Acclaim 2220N Antarox L 61 Blaunon P 124 UNII-2E9U4Y94DB UNII-1S66E28KXA Pluronic P 85 Pluronic P-85 UNII-BIS92ZSF57 Poloxalene Vepoloxamer [USAN] Vepoloxamer Poloxamer 124 Poloxamer 181 Poloxamer 182 Poloxamer 183 Poloxamer 184 Poloxamer 185 Poloxamer 188 Poloxamer 217 Poloxamer 234 Poloxamer 237 Poloxamer 331 Poloxamer 333 Poloxamer 334 Poloxamer 335 Poloxamer 338 Poloxamer 401 Poloxamer 403 Poloxalene [USAN:INN] Pluronic F-68 UNII-B9Y8J911BV UNII-YWJ6837FL1 UNII-5Z46X21X7I UNII-V8B3K56SW0 UNII-0R79529H48 UNII-40YKA808KW UNII-66EV99AS9E UNII-73V0D3O1FP UNII-7YLA84208M UNII-91B7KU0JTI UNII-XPP85ZHV76 Pluronic block copolymer p85 UNII-QDJ29LOA3J UNII-J2R38TWT27 UNII-E3JZI5G4RX UNII-UMG50ZW8UY UNII-CU4K26HG21 UNII-58SFJ9RW21 UNII-6SG11EPD3Z UNII-PH86TYV5Y9 UNII-3O0G38UT27 UNII-M1X5Y5T2QD UNII-NZ1V84NDF9 UNII-KDW7VYE2Z8 UNII-64CHX343Y8 UNII-5K7JD3ELD7 UNII-JO9JD7WJ20 UNII-F75JV2T505 (CAS 691397-13-4)
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