>98%(HPLC)
≥99%
98%
≥97%
≥98%(GC)
95%
97%
≥98%
>97%(GC)
≥98%(N)
>98%(GC)
>98%(HPLC)(N)
≥94%(GC)
≥90%, mixture of isomers
≥97%, 含KOH抑制剂