Benzo(B)Naphtho(2,1-D)Thiophene CAS 239-35-0
| CAS No. | 239-35-0 |
| Molecular Formula | C16H10S |
| Molecular Weight | 234.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Benzo(B)Naphtho(2,1-D)Thiophene.
Benzo(B)Naphtho(2,1-D)Thiophene (CAS 239-35-0), molecular formula C16H10S and molecular weight 234.32 g/mol, is a CATO reference standard with documented purity and traceability.
Benzo(B)Naphtho(2,1-D)Thiophene (C16H10S) contains sulfur-containing functionality, a polycyclic aromatic system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C16H10S |
| Molecular Weight | 234.32 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
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- 5-Bromo-1-(2-chlorophenyl)-1H-pyrazole-4-carboxylic acid (CAS 1399655-37-8)
- 2-Ethyl-4-(trifluoromethyl)pyrimidine-5-carboxylic acid (CAS 500130-77-8)
- 1-(Benzo[d][1,3]dioxol-5-ylmethyl)-6,7-dimethoxyisoquinoline (CAS 3407-72-5)
- 2-(tert-Butyl)-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazolo[4,5-c]pyridine (CAS 2096998-69-3)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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