5-(3-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic acid CAS 1388023-20-8
| CAS No. | 1388023-20-8 |
| Molecular Formula | C9H5ClN2O2S |
| Molecular Weight | 240.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-(3-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic 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.
5-(3-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1388023-20-8), molecular formula C9H5ClN2O2S and molecular weight 240.67 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 5-(3-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 240.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H5ClN2O2S |
| Molecular Weight | 240.67 g/mol |
| 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 DMSO, DMF, methanol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 4-(3-Chlorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1083274-64-9)
- 5-(4-Chlorophenyl)-1,2,3-thiadiazole-4-carboxylic acid (CAS 1083317-89-8)
- 4-(4-Chlorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1087605-48-8)
- 5-(2-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1388052-84-3)
- 5-(4-Chlorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1388054-06-5)
- 4-(2-Chlorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1432221-54-9)
- 3-Chlorophenyl 3,3,3-trifluoropropyl sulfide (CAS 1707361-66-7)
- 3-(4-Chlorophenyl)-1,2,4-thiadiazole-5-carboxylic acid (CAS 187999-26-4)
Recommended Standards
- 5-(Chloromethyl)-3-cyclopropyl-2-(trifluoromethyl)thiophene (CAS 1260671-17-7)
- 2-Chloro-4-(3-nitrophenyl)thiazole (CAS 1188122-55-5)
- 2-Chloro-N-(1,3,4-thiadiazol-2-yl)pyridine-3-carboxamide (CAS 109321-39-3)
- 2-(3-Chloropyridin-2-yl)-1,3-thiazole-4-carboxylic acid (CAS 1427378-95-7)
- 2-(Chloromethyl)-3-(difluoromethyl)pyridine-6-sulfonamide (CAS 1806802-18-5)
- Amino acid Impurity 22 (CAS 101080-23-3)
- Fraxinellone (CAS 28808-62-0)
- N,N-dimethyl-2-(5-nitro-2H-indazol-2-yl)ethan-1-amine (CAS 860649-95-2)
- 2-(2-Phenoxyphenyl)piperidine (CAS 383128-68-5)
- Flibanserin Impurity 14 (CAS 191977-79-4)
- 2-Methylpropane-2-sulfinic acid (CAS 29099-08-9)
- 2,2 inverted exclamation marka:5 inverted exclamation marka,2 inverted exclamation marka inverted exclamation marka:5 inverted exclamation marka inverted exclamation marka,2 inverted exclamation marka inverted exclamation marka inverted exclamation marka-Quaterthiophene 4T 5632-29-1 |A-Quarterthienyl (CAS 5632-29-1)
- Di-tert-butyl isophthalate (CAS 33813-32-0)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
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