1)5-Ethylothio-1H-Tetrazole(ETT) 2)5-Benzylmercaptotetrazole(BMT) 3)4,5-Dicyanoimidazole(DCI) 4)Guanidine Hydrochloride (CAS#50-01-1), Biotechnology grade 5)Guanidine Thiocyanate (CAS#593-84-0),Biotechnology grade 6)MES Monohydrate 7) MES Sodium 8)Glycylglycine ( CAS#556-50-30)