5-Cyano-3,4-diphenylthiophene-2-carboxamide CAS 70541-98-9
| CAS No. | 70541-98-9 |
| Molecular Formula | C18H12N2OS |
| Molecular Weight | 304.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 304.37 g/mol gives 5-Cyano-3,4-diphenylthiophene-2-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Cyano-3,4-diphenylthiophene-2-carboxamide (CAS 70541-98-9), a certified reference material (molecular formula C18H12N2OS, MW 304.37 g/mol) for analytical method development and quality control.
Structurally, 5-Cyano-3,4-diphenylthiophene-2-carboxamide (C18H12N2OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 304.37 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C18H12N2OS |
| Molecular Weight | 304.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cyano Standards
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Recommended Standards
- 5-Benzylidene-3-phenylimidazo[2,1-b]thiazol-6(5H)-one (CAS 89990-78-3)
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- 5-(4-PHenyl-phenyl)thieno[2,3-d]pyrimidin-4(3h)-one (CAS 307512-30-7)
- 6-(Methanesulfonylmethyl)-N-(prop-2-en-1-yl)-2-(pyridin-2-yl)pyrimidin-4-amine (CAS 339279-12-8)
- 2-(2,6-Dibromo-4-methylphenoxy)acetic acid (CAS 38206-97-2)
- 1-Butyl-3-methylimidazoliumtrifluoromethanesulfonate (CAS 145022-48-6)
- 3-(Benzylthio)-5-(2,2-dimethoxyethyl)-4-phenyl-4H-1,2,4-triazole (CAS 240799-52-4)
- 3-(Pyrimidin-4-yl)acrylic acid (CAS 857200-95-4)
- 6-(aminomethyl)-3H,4H-pyrrolo[2,1-f][1,2,4]triazin-4-one (CAS 1522904-73-9)
- ML226 (CAS 2055172-43-3)
- Methyl 2,4-dioxo-1,2,3,4-tetrahydropyrido[3,2-d]pyrimidine-6-carboxylate (CAS 1956332-21-0)
- 5-((Naphthalen-2-ylthio)methyl)isoxazol-3(2H)-one (CAS 89660-90-2)
- cis-3-Amino-1-benzyl-piperidine-4-carboxylic acid ethyl ester hydrochloride (CAS 2408429-63-8)
- Peptide Impurity 04 (CAS 2913424-91-4)
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