Gold(III) sulfide CAS 1303-61-3
| CAS No. | 1303-61-3 |
| Molecular Formula | Au2S3 |
| Molecular Weight | 490.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Gold(III) sulfide (CAS 1303-61-3), molecular formula Au2S3 and molecular weight 490.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Gold(III) sulfide (Au2S3) contains sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 490.13 g/mol, it falls into the moderately-high-molecular-weight range.
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 | Au2S3 |
| Molecular Weight | 490.13 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 3 |
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Why CATO?
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