2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thieno[3,2-b]thiophene CAS 924894-85-9
| CAS No. | 924894-85-9 |
| Molecular Formula | C18H26B2O4S2 |
| Molecular Weight | 392.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thieno[3,2-b]thiophene (CAS 924894-85-9), molecular formula C18H26B2O4S2 and molecular weight 392.15 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a sulfone group, a hydroxyl group, an ether linkage, 2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thieno[3,2-b]thiophene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 392.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H26B2O4S2 |
| Molecular Weight | 392.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Sulfur Atoms | 2 |
Related Bis Standards
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-N-(4-(trifluoromethyl)pyridin-2-yl)benzamide (CAS 1418307-30-8)
- Ethyl 2-(7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,10-dihydrophenanthren-2-yl)acetate (CAS 1423702-47-9)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(trifluoromethyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 1912451-53-6)
- benzyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindoline-2-carboxylate (CAS 2413029-09-9)
- 2-(3-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propyl)isoindoline-1,3-dione (CAS 1628595-38-9)
- N-(3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-3-(trifluoromethyl)benzamide (CAS 1225069-85-1)
- 2-(2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)isoindoline-1,3-dione (CAS 957061-09-5)
- Benzyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 1020174-05-3)
Recommended Standards
- 1,3-Bis(perfluorophenyl)urea (CAS 21132-30-9)
- 2-Iodo-N-(5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl)benzamide (CAS 887868-17-9)
- ((2-Hydroxy-5-iodo-1H-indol-3-yl)diazenyl)(pyridin-4-yl)methanone (CAS 52540-99-5)
- 4-(2-(3-Iodo-4-methoxybenzoyl)hydrazinyl)-4-oxobutanoic acid (CAS 315671-23-9)
- 3,4'-Dibromo-[1,1'-biphenyl]-4-ol (CAS 59452-49-2)
- 5-(propan-2-yl)-1H-pyrazole-4-carboxylic acid 870704-28-2 Z398513148 (CAS 870704-28-2)
- 1020252-28-1 4-(3-Phenoxyphenyl)-1H-1,2,3-triazole-5-carbonitrile MFCD00170590 (CAS 1020252-28-1)
- tert-butyl 5-(aminomethyl)-1,2,3,4-tetrahydroquinoline-1-carboxylate (CAS 1803595-39-2)
- Mono-(7-carboxy-2,7-dimethylheptyl) Phthalate (CAS 1373125-93-9)
- 6-(Methylamino)-5-nitropyrimidine-2,4(1H,3H)-dione (CAS 41964-42-5)
- 1,3,4-THIADIAZOL-2-YLBORONIC ACID 1258867-74-1 (CAS 1258867-74-1)
- 2-Carboxy-5-methoxypyridine 1-oxide (CAS 672957-93-6)
- Metopimazine-d6 (CAS 1215315-86-8)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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