Rongalite (PMB-R) and ortho-nitrobenzyl Rongalite (oNB-R) were intended to be deprotected under oxidizing conditions and light, respectively, while 2-trimethylsilylethylsulfone (SES) would be deprotected with fluoride (Figure ). SES is a common protecting group for sulfonamides; however, its use as a sulfinate protecting group is much rarer with only a single report showing its use in forming sulfinates. Combined with the already known protecting groups of TBS-R, Rongacyl, and SMOPS, PMB-R, oNB-R and SES should provide orthogonal deprotection conditions and stability profiles.