Cb. Reese et Ql. Song, AVOIDANCE OF SULFUR LOSS DURING AMMONIA TREATMENT OF OLIGONUCLEOTIDE PHOSPHOROTHIOATES, Nucleic acids research, 25(14), 1997, pp. 2943-2944
Sulfur loss during the unblocking of phosphorothioate analogues of oli
gonucleotides with concentrated aqueous ammonia can be completely supp
ressed by the addition of 2-mercaptoethanol.