Benzo[b]thiophene-5-carboximidamide CAS 71889-76-4
| CAS No. | 71889-76-4 |
| Molecular Formula | C9H8N2S |
| Molecular Weight | 176.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Benzo[b]thiophene-5-carboximidamide (CAS 71889-76-4) is a high-purity analytical reference standard with the molecular formula C9H8N2S and a molecular weight of 176.24 g/mol.
Based on its molecular formula C9H8N2S, Benzo[b]thiophene-5-carboximidamide contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H8N2S |
| Molecular Weight | 176.24 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Benzo Standards
- Benzo[b]thiophene-3-carboximidamide (CAS 154650-83-6)
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- 1-(Benzo[b]thiophen-3-yl)ethan-1-one (CAS 1128-05-8)
- 1-(Benzo[b]thiophen-5-yl)ethan-1-one (CAS 1128-88-7)
- 1-(Benzo[b]thiophen-4-yl)ethanone (CAS 88341-06-4)
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Recommended Standards
- 8-Aminoisoquinoline-5-thiol (CAS 35317-96-5)
- Dibenzofuran-d8 (CAS 93952-04-6)
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- Indole-3-thio Carboxamide (CAS 59108-90-6)
- 3-Methoxy-4-(2-methoxy-2-oxoethoxy)benzoic acid (CAS 94946-79-9)
- 3-Trifluoromethanesulfonylbenzonitrile (CAS 1274903-99-9)
- 5-Ethoxy-2-isopropylisoxazolidine (CAS 174497-84-8)
- 2-(n-Methyl5-chlorothiophene-2-sulfonamido)acetic acid (CAS 749897-58-3)
- (E)-({1-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-1H-pyrazol-5-yl}methylidene)(methoxy)amine (CAS 318958-96-2)
- 3-(3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)benzoic acid (CAS 823195-16-0)
- tert-Butyl 2,5-dihydrofuran-3-carboxylate (CAS 797038-34-7)
- Methyl 2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinate (CAS 2291165-13-2)
- Bis(1-methyl-4-nitro-1H-imidazol-5-yl)sulfane (CAS 13755-68-5)
- Liraglutide (14-31)TFA Salt (CAS CATO-C4X-19927)
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