Tert-Butyl(1R,2S,5S)-2-azido-5-[(dimethylamino)carbonyl]cyclohexylcarbamate oxalic acid CAS NO.:1353893-22-7

N-[(1R,2S,5S)-2-amino-5-[(dimethylamino)carbonyl]cyclohexyl]carbamic acid tert-butyl ester oxalate hydrate is an important precursor or intermediate in the synthesis of the antihistamine and allergy treatment drug ​​Ebastine​​ or its key intermediates. It is commonly used in pharmaceutical synthesis to construct the chiral cyclohexylamine scaffold and control amino group protection. This facilitates the subsequent formation of drug molecules with selective H₁ receptor antagonist activity. It is widely used in the research, development, and production of antiallergic and antihistaminic drugs, playing a significant role in relieving allergy symptoms such as urticaria and allergic rhinitis.