Formamide-13C, 15N is labelled Formamide ( F691780) and a useful research chemical used in synthesis of [14C]-, [13C4]-, and [13C4,15N2]-5-amino-4-iodopyrimidine. Formamide (F691780 ) is a compound that is used in biochemistry to prevent RNA samples from degradation due to RNAses. Formamide (F691780 CAS# 75-12-7) is also used as a plasticizer to prepare thermoplastic starch (TPS), a special type of starch that can be mixed with other synthetic polymers because of its unique ability to “flow”