You can find RefSeq accession IDs on RNAi product pages, but continue searching by target gene/protein.
Although we capture accession IDs (RefSeq) of RNAi targets/genes in our database, they are not searchable parameters at this time. Generally, our search strategy at BenchSci is to target gene and protein names and further refine using our filters from there. If your goal is to home in on splice variants and isoforms, this is a feature we are still developing. However, you can try searching for the variant directly in the search bar. Let us know if the variant you are searching for is missing!
If searching by accession ID is something that would be valuable to your workflow, we would love to talk to you to learn more about it.