Thioctic acid Impurity 38 CAS 5238-47-1
| CAS No. | 5238-47-1 |
| Molecular Formula | C8H15ClO2S |
| Molecular Weight | 210.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Thioctic acid Impurity 38 (CAS 5238-47-1) is a certified pharmaceutical impurity reference standard with the molecular formula C8H15ClO2S and a molecular weight of 210.72 g/mol.
Structurally, Thioctic acid Impurity 38 (C8H15ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 210.72 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Thioctic acid Impurity 38 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H15ClO2S |
| Molecular Weight | 210.72 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Thioctic Standards
- Thioctic acid Impurity 39 (CAS 5238-48-2)
- Thioctic Acid Impurity 4 (CAS 119365-69-4)
- Thioctic Acid EP Impurity B (CAS 462-20-4)
- Thioctic acid Impurity 70 (CAS CATO-C4X-152670)
- Thioctic Acid Impurity N8 (CAS 41443-60-1)
- Thioctic acid impurity 60 (CAS 105484-55-7)
- Thioctic acid (CAS 1077-28-7)
- Thioctic acid Impurity 5 (CAS 3206-73-3)
Recommended Standards
- (4-Methylphenyl)methanesulfonyl chloride; 4-Methylbenzenemethanesulfonyl chloride; p-Methyl-|A-toluenesulfonyl chloride; p-Tolylmethanesulfonyl chloride 51419-59-1 AB1005513 (CAS 51419-59-1)
- Cyclooctanesulfonyl chloride (CAS 62371-32-8)
- 1-(chloromethyl)-2,4-bis(propan-2-yl)benzene (CAS 122776-87-8)
- Cycloheptylmethanesulfonyl chloride (CAS 242459-87-6)
- Salcaprozate Impurity 6 (CAS CATO-C4X-25076)
- Indacaterol Impurity 22 (CAS 2598-30-3)
- Belinostat Impurity 3 (CAS CATO-C4X-34903)
- 2-((3-(3-Methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethan-1-amine (CAS 1204298-34-9)
- 2-(4-Piperidyl)-2-propanol (CAS 22990-34-7)
- 5-(3-Fluoro-phenyl)-4-piperidin-3-yl-pyrimidin-2-ylamine dihydrochloride (CAS 1361118-68-4)
- (4-(N-Cyclohexylsulfamoyl)phenyl)boronic acid (CAS 871329-66-7)
- Methyl (2Z)-3-[(2H-1,3-benzodioxol-5-yl)amino]-2-(4-methoxybenzenesulfonyl)prop-2-enoate (CAS 1327171-84-5)
- (2S,3S,4R,5R)-3-fluoro-2,4,5,6-tetrahydroxyhexanal (CAS 14049-03-7)
- Uremic Pentapeptide (CAS 71494-20-7)
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