4-Aminothieno[2,3-d]pyrimidine-2(1h)-thione CAS 177355-92-9
| CAS No. | 177355-92-9 |
| Molecular Formula | C6H5N3S2 |
| Molecular Weight | 183.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Aminothieno[2,3-d]pyrimidine-2(1h)-thione (CAS 177355-92-9), molecular formula C6H5N3S2 and molecular weight 183.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Aminothieno[2,3-d]pyrimidine-2(1h)-thione (C6H5N3S2) contains a nitrile group, 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 183.25 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Aminothieno[2,3-d]pyrimidine-2(1h)-thione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H5N3S2 |
| Molecular Weight | 183.25 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.) | 2007 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Aminothieno Standards
- 3-aminothieno[3,2-b]pyridine-6-carbonitrile (CAS 116538-96-6)
- 4-Aminothieno[3,2-d]pyrimidine-7-carbaldehyde (CAS 1446113-33-2)
- 4-Aminothieno[2,3-d]pyrimidine-6-carbaldehyde (CAS 655254-90-3)
- 4-Aminothieno[2,3-b]pyridine-5-carbonitrile (CAS 1086397-96-7)
- 5-aminothieno[3,2-b]pyridine-6-carbonitrile (CAS 60639-44-3)
- 1-(3-Aminothieno[3,2-c]pyridin-2-yl)ethanone (CAS 1706459-50-8)
- 1-(3-Aminothieno[2,3-b]pyridin-2-yl)ethan-1-one (CAS 52505-41-6)
- 3-Aminothieno[3,2-c]pyridine-2-carboxamide (CAS 1706454-34-3)
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- 2-Amino-2-(5-chlorothiophen-2-yl)acetonitrile (CAS 1015434-52-2)
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