ethyl 2-[2-(benzenesulfonamido)-1,3-thiazol-4-yl]acetate

ethyl 2-[2-(methylcarbamoylamino)-1,3-thiazol-4-yl]acetate

2-[2-(tritylamino)-1,3-thiazol-4-yl]acetic acid

2-[[(3-氯-2-甲基苯基)磺酰基]氨基]-4-噻唑乙酸