| Name | Metaprefix | URI |
|---|---|---|
| CAS Registry Number | cas |
https://commonchemistry.cas.org/detail?cas_rn=50-00-0 |
| Bioregistry | bioregistry |
https://bioregistry.io/cas:50-00-0 |
| Identifiers.org | miriam |
https://identifiers.org/cas:50-00-0 |
| Name-to-Thing | n2t |
https://n2t.net/cas:50-00-0 |