[Agent-X]

This is the second time I've seen this Ph thing.

What is Ph in this structure?



Is this what it is referring to?
http://en.wikipedia.org/wiki/Phenyl_ring

[nj_bartel]

Phenyl substituent, yes.  It can also be represented as phi

[Rohming]

Ph is a benzene ring or as you know a phenyl ring,  sometimes you will even see it as Ar (abbreviation for Aryl, where Aryl is an aromatic ring and most times Phenyl)

[chalconix]

Ph is a benzene ring or as you know a phenyl ring,  sometimes you will even see it as Ar (abbreviation for Aryl, where Aryl is an aromatic ring and most times Phenyl)

Ph- is C6H5- or phenyl, Ar- is most of the times substituted phenyl.

[Agent-X]

Phenyl substituent, yes.  It can also be represented as phi

Alright.
I thank all of you for your input.

[typhoon2028]

it is not an element