for the following products
1-Sulfomethyl-5-mercaptotetrazole disodium salt | 1-Sulfomethyl-5-thioltetrazole disodium salt | 5-Mercapto-1-sulfomethyltetrazole disodium salt | Disodium 2,5-dihydro-5-thiooxo-1H-tetrazol-1-ylmethanesulfonate and 5-Mercapto-1H-tetrazole-1-methane-sulfonic acid disodium salt
