The release behavior of nicotinamide (NAA) from fatty acid (FA)-NAA equimolar complexes was examined in a JP XI dissolution test apparatus in JP XI disintegration test medium No. 1 (pH 1.2) at 37°C where the carbon number of FA is 14-18. The time required for 50% or 80% of NAA to release (T50 or T80) was measured, and the effect of the constituent FA on T50 or T80 was investigated. The values of T50 or T80 for FA-NAA formed with odd-numberd FA were larger than those for FA-NAA formed with even-numbered FA whose alkyl chain length is one more carbon number longer, though the values of T50 of T80 increased rather regularly with an increase of the alkyl chain length for only even-numbered or odd-numbered FA. The values of T50 and T80 for FA-NAA formed with heptadecanoic acid (C17-NAA) were about 36 and 102 min, respectively, suggesting that C17-NAA may be applicable to the preparetion of a sustained-release drug formulation.
在
脂肪酸(FA)-NAA 等摩尔复合物中检测了烟酰胺(NAA)在 JP XI 溶出试验设备中的释放行为,该设备采用 JP XI 1 号崩解试验
培养基(pH 值为 1.2),温度为 37°C,其中 FA 的碳数为 14-18。测量了 50%或 80% NAA 释放所需的时间(T50 或 T80),并研究了成分 FA 对 T50 或 T80 的影响。奇数 FA 形成的 FA-NAA 的 T50 或 T80 值大于烷基链长多一个碳数的偶数 FA 形成的 FA-NAA 的 T50 或 T80 值。与
十七酸(C17-NAA)形成的 FA-NAA 的 T50 值和 T80 值分别约为 36 分钟和 102 分钟,这表明 C17-NAA 可能适用于制备缓释药物制剂。