5,5'-Dimethyl-3,3'-bithiophene CAS 38418-27-8
| CAS No. | 38418-27-8 |
| Molecular Formula | C10H10S2 |
| Molecular Weight | 194.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5,5'-Dimethyl-3,3'-bithiophene (C10H10S2) contains sulfur-containing functionality, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 194.32 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies 5,5'-Dimethyl-3,3'-bithiophene (CAS 38418-27-8), a certified reference material (molecular formula C10H10S2, MW 194.32 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C10H10S2 |
| Molecular Weight | 194.32 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Sulfur Atoms | 2 |
Related Dimethyl Standards
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Recommended Standards
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- 2-(3,3,3-Trifluoropropoxy)benzaldehyde (CAS 1343145-49-2)
- 6-(2-chloroacetyl)-3,4-dihydro-1H-quinolin-2-one (CAS 61122-82-5)
- Methyl 6-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinate (CAS 1622217-33-7)
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- α-(3,4-Diethoxyphenyl)-6,7-diethoxy-1-isoquinolinemethanol (CAS 1394077-64-5)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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