3-Amino-5,6-dihydro-4h-cyclopenta[b]thiophene-2-carbonitrile CAS 1233920-99-4
| CAS No. | 1233920-99-4 |
| Molecular Formula | C8H8N2S |
| Molecular Weight | 164.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Amino-5,6-dihydro-4h-cyclopenta[b]thiophene-2-carbonitrile (C8H8N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
3-Amino-5,6-dihydro-4h-cyclopenta[b]thiophene-2-carbonitrile (CAS 1233920-99-4) is a high-purity analytical reference standard with the molecular formula C8H8N2S and a molecular weight of 164.23 g/mol.
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 | C8H8N2S |
| Molecular Weight | 164.23 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (S)-N-(Pyrrolidin-3-yl)methanesulfonamide (CAS 1231978-77-0)
- 4-Hydrazinyltetrahydro-2H-thiopyran 1,1-dioxide (CAS 1240912-86-0)
- 5-(Methylthio)-1H-benzo[d]imidazole (CAS 121537-61-9)
- n-(2-Aminoethyl)cyclopropanesulfonamide (CAS 1241911-78-3)
- 2-(2-phenylethyl)-3,4-dihydropyrimidin-4-one (CAS 1251377-90-8)
- 3-Amino-4-chloro-N-(2-methylphenyl)-benzenesulfonamide (CAS 1041512-58-6)
- Methyl deacetylasperulosidate (CAS 52613-28-2)
- 2-(3-Isobutoxyphenyl)quinoline-4-carbohydrazide (CAS 524733-57-1)
- 2-(Difluoromethyl)naphthalene-6-methanol (CAS 1261800-78-5)
- 6-Amino-1-methyl-5-(piperidin-1-yl)-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 790232-28-9)
- tert-Butyl 4-(3-chlorobenzylamino)piperidine-1- (CAS 848345-63-1)
- 2-Bromo-8-fluoro-4-(trifluoromethyl)quinoline (CAS 663192-84-5)
- 1-(3-(Chloromethyl)phenyl)-3,5-dimethyl-1H-pyrazole (CAS 1170394-63-4)
- Tirzepatide Impurity 18 (CAS CATO-C4X-324018)
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