Thioctic acid Impurity 76 CAS CATO-C4X-152676
| CAS No. | CATO-C4X-152676 |
| Molecular Formula | C48H84O12S12 |
| Molecular Weight | 1237.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Thioctic acid Impurity 76 (CAS CATO-C4X-152676) is a certified pharmaceutical impurity reference standard with the molecular formula C48H84O12S12 and a molecular weight of 1237.95 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Thioctic acid Impurity 76 is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1237.95 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 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 | C48H84O12S12 |
| Molecular Weight | 1237.95 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 12 |
Related Thioctic Standards
- Thioctic acid Impurity 75 (CAS CATO-C4X-152675)
- Thioctic acid Impurity 95 (CAS CATO-C4X-152695)
- Thioctic acid Impurity 96 (CAS CATO-C4X-152696)
- Thioctic acid Impurity 97 (CAS CATO-C4X-152697)
- Thioctic Acid Impurity 45 (CAS CATO-C4X-152645)
- Thioctic acid Impurity 73 (CAS CATO-C4X-152673)
- Thioctic Acid Impurity 7 (CAS CATO-C4X-15187)
- Thioctic acid Impurity 14 (CAS CATO-C4X-152614)
Recommended Standards
- 2,3,5,6-tetrakis(3,6-di-t-Butylcarbazol-9-yl)-1,4-dicyanobenzene (CAS 2153433-46-4)
- Perfluorotetracosane (CAS 1766-41-2)
- 2,4,5,6-Tetrakis(3,6-di-tert-butyl-9H-carbazol-9-yl)isophthalonitrile (CAS 1630263-99-8)
- Gold, tetrakis(2,3,4,5,6-pentafluorophenyl)bis(tetrahydrothiophene)di-, (Au-Au), stereoisomer (CAS 938163-22-5)
- Eugenol EP Impurity F (CAS 5912-86-7)
- Relugolix Impurity 184 (CAS CATO-C4X-2429184)
- Oseltamivir Impurity 134 (CAS CATO-C4X-1720134)
- 6-Amino-5-[(cyclopentanecarbonyl)amino]-1,3-dimethyluracil (CAS 887352-43-4)
- (1S,5S,6R)-2-oxabicyclo[3.1.0]Hexane-6-carboxylic acid (CAS 1436006-59-5)
- 2-Difluoromethoxy-3-(trifluoromethyl)benzonitrile (CAS 1803832-79-2)
- 1-(2-Chlorobenzyl)-1,4-diazepane hydrochloride (CAS 1353979-10-8)
- 5-Cyclopropoxy-2-ethyl-N,N-dimethylbenzamide (CAS 1243475-38-8)
- Calcium arsenate (CAS 7778-44-1)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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