Iguratimod Impurity 37 CAS 1340086-28-3
| CAS No. | 1340086-28-3 |
| Molecular Formula | C8H10ClNO3S |
| Molecular Weight | 235.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Iguratimod Impurity 37 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 235.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a process- or degradation-related impurity, Iguratimod Impurity 37 (CAS 1340086-28-3, C8H10ClNO3S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C8H10ClNO3S |
| Molecular Weight | 235.69 g/mol |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 86 (CAS CATO-C4X-182686)
- Iguratimod Impurity 126 (CAS CATO-C4X-1826126)
- Iguratimod Impurity 82 (CAS CATO-C4X-182682)
- Iguratimod Impurity 125 (CAS CATO-C4X-1826125)
- Iguratimod Impurity 136 (CAS CATO-C4X-1826136)
- Iguratimod Impurity 145 (CAS CATO-C4X-1826145)
- Iguratimod Impurity 4 (CAS 84594-95-6)
- Iguratimod Impurity 52 (CAS 82780-78-7)
Recommended Standards
- 6-Chloro Penicillanic acid (CAS CATO-C4X-175628)
- Torasemide impurity 34 (CAS CATO-C4X-183634)
- n-(5-Chloro-2-methoxyphenyl)methanesulfonamide (CAS 519172-27-1)
- Diazoxide Impurity 20 (CAS CATO-C4X-195220)
- Oxcarbazepine Impurity 25 (CAS 104839-39-6)
- Dexrazoxane Impurity 12 (CAS CATO-C4X-202012)
- Somatostatin Impurity 17 (CAS CATO-C4X-235017)
- 1-(4-(2-Fluorophenyl)thiazol-2-yl)-4-(4-methoxyphenyl)-1H-pyrazol-5-amine (CAS 955963-46-9)
- N1-(3-chloro-4-fluorophenyl)-6-chlorohexanamide (CAS 647825-21-6)
- Acetic Acid Tetrahydro-2H-thiopyran-2-yl Ester (CAS 14711-62-7)
- Cefmetazole Impurity 62 (CAS CATO-C4X-150762)
- Palbociclib Impurity 204 (CAS 119285-06-2（free base）)
- H-p-Chloro-Phe-D-Cys-β-(3-pyridyl)-Ala-D-Trp-N-Me-Lys-Thr-Cys-2-Nal-NH2 (Disulfide bond) (CAS 341519-04-8)
- Peptide Impurity 04 (CAS 2913424-91-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com