Thestructure of the products have been confirmed by NMR and LC-MS.

化合物结构经核磁共振(nmr)和液-质联机(LC - MS)进行确认。

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The stabilities of otilonium bromide in alcohols, water, acetonitrile and plasma were investigated by HPLC, and the degradation products were identified by LC-MS/MS, 1H-NMR and 13C-NMR.

试验中采用HPLC法考察奥替溴铵在醇、水、乙腈及血浆中的稳定性，并用LC-MS/MS、 1H-NMR及13C-NMR法对其降解产物进行结构鉴定。

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