Thioctic Acid Impurity 7 CAS CATO-C4X-15187
| CAS No. | CATO-C4X-15187 |
| Molecular Formula | C18H32N2O2S4 |
| Molecular Weight | 436.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Thioctic Acid Impurity 7 (C18H32N2O2S4) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 436.72 g/mol, it falls into the moderately-high-molecular-weight range. 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, Thioctic Acid Impurity 7 (CAS CATO-C4X-15187, C18H32N2O2S4) 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 | C18H32N2O2S4 |
| Molecular Weight | 436.72 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 4 |
Related Thioctic Standards
- Thioctic acid Impurity 73 (CAS CATO-C4X-152673)
- Thioctic acid Impurity 14 (CAS CATO-C4X-152614)
- Thioctic acid Impurity 15 (CAS CATO-C4X-152615)
- Thioctic acid Impurity 6 (CAS 108841-56-1)
- Thioctic Acid Impurity 44 (CAS 6718-96-3)
- Thioctic Acid Impurity 24 (CAS CATO-C4X-152653)
- Thioctic Acid Impurity 12 (CAS 916746-61-7)
- Thioctic acid Impurity 85 (CAS 13075-44-0)
Recommended Standards
- 4-[5-(4-Chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carbonyl]morpholine (CAS 477713-35-2)
- N-(2-{[2,5-bis(2,2,2-trifluoroethoxy)phenyl]formamido}ethyl)-2-chloroacetamide (CAS 338404-61-8)
- 4-[5-(4-Chlorophenyl)-1-(2,5-dichlorophenyl)-1H-pyrazole-3-carbonyl]morpholine (CAS 477712-08-6)
- (E)-{[6-(4-chlorophenyl)imidazo[2,1-b][1,3]thiazol-5-yl]methylidene}[(2,4-dichlorophenyl)methoxy]amine (CAS 338404-55-0)
- Bedaquiline Impurity 67 (CAS 345949-37-3)
- Imipenem Impurity 4 (CAS CATO-C4X-16624)
- Palbociclib Impurity 40 (CAS CATO-C4X-112540)
- N-(2-Fluorophenyl)-4-(4-oxobenzo[d][1,2,3]triazin-3(4H)-yl)butanamide (CAS 880812-27-1)
- Methyl 4-(methylamino)-3-oxobutanoate (CAS 201611-50-9)
- 2,3-Dimethyl-2-phenylbutanal (CAS 116936-66-4)
- 3-(2-Chlorophenyl)-N-((3,4-dimethoxyphenethyl)carbamothioyl)-5-methylisoxazole-4-carboxamide (CAS 883031-66-1)
- 4-(1H-imidazol-4-ylmethyl)phenol (CAS 911701-06-9)
- N,N-Dimethyl-3-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)oxy)propan-1-amine (CAS 1346697-33-3)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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