2-(5-Mercapto-1,3,4-thiadiazol-2-ylamino)ethanol 2-(beta-Hydroxyethyl)-amino-1,3,4-thiadiazole-5-thione 63503-52-6 BRN 0512509 ETHANOL, 2-(5-MERCAPTO-1,3,4-THIADIAZOL-2-YLAMINO)-