Cloransulam-desethyl free acid CAS 171297-30-6
| CAS No. | 171297-30-6 |
| Molecular Formula | C12H7ClFN5O5S |
| Molecular Weight | 387.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 387.73 g/mol gives Cloransulam-desethyl free acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cloransulam-desethyl free acid (CAS 171297-30-6), molecular formula C12H7ClFN5O5S and molecular weight 387.73 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, fluorine/chlorine substitution, Cloransulam-desethyl free acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 387.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C12H7ClFN5O5S |
| Molecular Weight | 387.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Cloransulam Standards
- Cloransulam (CAS 159518-97-5)
- Cloransulam-Methyl (CAS 147150-35-4)
- Cloransulam-Methyl Impurity 12 (CAS 207801-50-1)
- Cloransulam-Methyl Impurity 11 (CAS CATO-C4X-317011)
- Cloransulam-Methyl Impurity 1 (CAS CATO-C4X-31701)
- Cloransulam-Methyl Impurity 10 (CAS CATO-C4X-317010)
- Cloransulam-Methyl Impurity 2 (CAS CATO-C4X-31702)
- Cloransulam-Methyl Impurity 3 (CAS CATO-C4X-31703)
Recommended Standards
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- 5-{[(4-chlorophenyl)methyl]sulfanyl}-4-(2,4-dichlorophenyl)-1,2,3-thiadiazole (CAS 338409-64-6)
- 1-Cyclohexyl-2-Fluoro-2-Methyl-1-Propanone (CAS 130485-81-3)
- ethyl 1-(2-amino-4-nitrophenyl)-4-piperidinecarboxylate (CAS 1221792-44-4)
- Flupentixol EP Impurity D (CAS 791521-96-5)
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- 2-Bromo-4-methyl-3-nitro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine (CAS 2758660-59-0)
- (3-Isopropoxyphenyl)(pyridin-2-yl)methanol (CAS 1443311-19-0)
- Ethyl 5-amino-1-(4-chlorophenyl)-3-(2-hydroxyethoxy)-1H-pyrazole-4-carboxylate (CAS 321391-78-0)
- 5,6,7,8-Tetrahydropyrrolo[3,2-c]azepin-4(1H)-one (CAS 21357-23-3)
- Lactic acid acrylate (CAS 98136-13-1)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
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