941-55-9 Azido-p-toluenesulfonic acid Benzenesulfonyl azide, 4-methyl- NSC138649 Tosyl azide Tosyl nitride p-Methylphenylsulfonyl azide p-Toluenesulfonazide p-Toluenesulfonic acid azide p-Toluenesulfonyl azide p-Tolylsulfonyl azide