Can C-20 or more is possible:::::

[praveenpaliwal]

Hi,

experts I want to know from u all that C-4, C-6, C-8, C-16 and C-18 is available why C-20 or onwards are not available what is the basic reasons

Praveen

[tom jupille]

Longer-chain columns *are* available. For example:
http://www.thermoscientific.com/ecomm/s ... 5805996_-1
http://www.phenomenex.com/Products/HPLC ... eous%20C30

It's just that they have limited utility.

[Gerhard Kratz]

Good Morning Praveen,

In Addition to Tom's Information have also a look on YMC's Website for C30, a Special column for carotinoide application. For sure it is possible to make silanes to get >C18, as Tom mentioned they have limited Utility for Special applications. But for Special applications it is nice to have such phases.
Have an excellent day.
Gerhard