6-Amino-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione CAS 99979-82-5
| CAS No. | 99979-82-5 |
| Molecular Formula | C5H5N5S |
| Molecular Weight | 167.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6-Amino-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione is closely related to a nitrile group, sulfur-containing functionality in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
6-Amino-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione (CAS 99979-82-5), molecular formula C5H5N5S and molecular weight 167.19 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 6-Amino-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione (C5H5N5S) contains a nitrile group, sulfur-containing functionality. 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 167.19 g/mol, it falls into the medium-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 | C5H5N5S |
| Molecular Weight | 167.19 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 |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Amino Standards
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Recommended Standards
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