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RU.521 (RU320521) Selleck VS Sigma
| RU.521 (RU320521) | Selleck(S6841) | Sigma(SML2347) |
| Free Aliquoting Service |  |
N/A |
| Price | 5mg, USD 147.0 | 5mg, USD 185.00 |
| Purity | 99.99% | 98% |
| Citations | 17 | 7 |
| Technical Support | 95.37% response rate within 2 hours | Unknown |
| Knowledge | Unknown |
Sigma is sourced from their official website（1/20/2026）