Thiamine Impurity 11 CAS 105070-51-7
| CAS No. | 105070-51-7 |
| Molecular Formula | C24H30N8O2S2 |
| Molecular Weight | 526.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Thiamine Impurity 11 is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Thiamine Impurity 11 (CAS 105070-51-7), a pharmacopoeial impurity reference standard (molecular formula C24H30N8O2S2, MW 526.68 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C24H30N8O2S2, Thiamine Impurity 11 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 526.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Thiamine Impurity 11 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 | C24H30N8O2S2 |
| Molecular Weight | 526.68 g/mol |
| Purity | 97%+ |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 2 |
Related Thiamine Standards
- Thiamine Triphosphate (CAS 3475-65-8)
- Thiamine Disulfide (CAS 1899166-52-9)
- Thiamine Impurity 30 (CAS 100502-51-0)
- Thiamine /Vitamin B1 Impurity 49 (CAS CATO-C4X-187349)
- Thiamine Disulfide (CAS 67-16-3)
- Thiamine pyrophosphate S,S-dioxide (CAS CATO-C4X-187360)
- Oxo Thiamine O-Diphosphate (CAS 59733-97-0)
- Thiamine /Vitamin B1 Impurity 48 (CAS CATO-C4X-187348)
Recommended Standards
- Dodecyl β-D-thiomaltopyranoside (CAS 148565-58-6)
- Phenyl 2,3,4-Tri-O-benzyl-1-thio-β-L-fucopyranoside (CAS 167612-35-3)
- 4-Chloro-5-(4-methoxyphenyl)-3-perfluorohexyl-1H-pyrazole (CAS 1029649-80-6)
- (2R,4R)-tert-butyl 4-(4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazin-1-yl)-2-(thiazolidine-3-carbonyl)pyrrolidine-1-carboxylate (CAS 2459946-10-0)
- Rimegepant Impurity 47 (CAS CATO-C4X-248747)
- Norepinephrine impurity 151 (CAS CATO-C4X-1514151)
- Ceftazidime Impurity 19 (CAS CATO-C4X-121219)
- Azido-PEG9-acid (CAS 1670249-37-2)
- Cyclohexyl phenyl ketone (CAS 712-50-5)
- 2-(4-Chlorobenzyl)-2H-benzo[e][1,2,3,4]thiatriazine 1,1-dioxide (CAS 866151-86-2)
- 4-Ethynyl-5-fluoro-1,3-dimethyl-1H-pyrazole (CAS 1823967-57-2)
- Benzyl ((1-(2-aminoacetyl)piperidin-2-yl)methyl)carbamate (CAS 1353985-98-4)
- 4-Amino-6-bromo-5-(difluoromethyl)pyridine-3-sulfonyl chloride (CAS 1805103-51-8)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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