Indapamide Impurity 9 CAS 1939-76-0
| CAS No. | 1939-76-0 |
| Molecular Formula | C7H5ClN2O2S |
| Molecular Weight | 216.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Indapamide Impurity 9 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Indapamide Impurity 9 (CAS 1939-76-0) is a high-purity analytical reference standard with the molecular formula C7H5ClN2O2S and a molecular weight of 216.64 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Indapamide Impurity 9 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5ClN2O2S |
| Molecular Weight | 216.64 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Indapamide Standards
- Indapamide Impurity 6 (CAS 2455-92-7)
- Indapamide Impurity 48 (CAS CATO-C4X-140048)
- Indapamide Impurity 11 (CAS 1856658-28-0)
- Indapamide Impurity 21 (CAS 70049-77-3)
- Indapamide Impurity 17 (CAS 2494-79-3)
- Indapamide Impurity 18 (CAS 122-01-0)
- Indapamide Impurity 14 (CAS 604787-44-2)
- Indapamide Impurity 43 (CAS CATO-C4X-140043)
Recommended Standards
- 4-chloro-2-cyanobenzene-1-sulfonamide (CAS 189063-46-5)
- 4H-1,2,4-Benzothiadiazine, 7-chloro-, 1,1-dioxide (CAS 19477-12-4)
- Ethyl 2-(4-chloro-2-fluorophenyl)acetate (CAS 188424-98-8)
- 6-Chloro-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 19477-31-7)
- 2,4-Dichloro-5-methylbenzoic acid methyl ester (CAS 1803805-37-9)
- Urapidil hydrochloride (CAS 64887-14-5)
- (2-(3,5-Dimethyl-1H-pyrazol-1-yl)-5-methoxyphenyl)methanol (CAS 918812-46-1)
- 1-[(2R,3R,4R,5R)-5-(aminomethyl)-3-fluoro-4-hydroxy-tetrahydrofuran-2-yl]pyrimidine-2,4-dione (CAS 1012080-90-8)
- 2-(4-Methoxyphenyl)-2-(4-methylpiperazin-1-yl)ethan-1-amine (CAS 927991-18-2)
- 4-Amino-6-methylpicolinic acid (CAS 89693-89-0)
- 4-(1-Ethyl-1,3-dimethyl-pentyl)-phenol 353NP(E) (CAS 186825-36-5)
- 2-(6,7-Dimethyl-3-oxo-1,2,3,4-tetrahydroquinoxalin-2-yl)-N-(2-propoxyphenyl)acetamide (CAS 342615-84-3)
- 4-(tert-Butyl)-3-cyclopropoxy-N,N-dimethylpicolinamide (CAS 1243481-09-5)
- D-Pro36-Tirzepatide (CAS CATO-CPTD788903)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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