≥98%(HPLC)
98%
≥95%
>98%(T)
>98%(GC)(T)
≥98%(GC)
95%
>98%(HPLC)
97%
93%
>95%(GC)
≥98%
≥90%, stabilized with calcium carbonate
≥95%(GC)
≥96%(GC)
90%