No.. not compulsory... because u can have no other structure for phenylethanone....
17 Answers
Abhishek Priyam
·2009-03-23 00:29:01
Pavithra Ramamoorthy
·2009-03-23 00:38:32
ya.. dats rit it s necessary to mention "1" when it has diff positional isomers..
if there r unique structure fr a cmp no need fr dat..
ДвҥїÑuÏ now in medical c
·2009-03-23 00:34:48
Give an example...
i read that.... if nothing is mentioned then it is in no.1 C position
ДвҥїÑuÏ now in medical c
·2009-03-23 00:31:09
Priyam ...can u give an example where "1" must be mentioned....