Mohanam is a Karnaatik Raagam which is a vast and ciborium Raagam. In the Hindusthani paddhati Bhoop has more charectristics than any other Raag to Mohanam . But Raag-s like “Suddha Kalyan” “Deshkar Jhait Kalyan Suddh Bibhas( Mohanam Type) have imbued the Mohanam Flavour. In certain elucidations and nyaasam-s these Raga-s are also essentially included in Mohanam 

Mohanam (pronounced Mōhanam, Sanskrit: मोहनम, Tamil: மோகனம்) is a rāgam in Carnatic music (musical scale of South Indian classical music). It is an audava rāgam (or owdava rāgam, meaning pentatonic scale). It is a janya rāgam (derived scale), as it does not have all the seven swaras (musical notes).

The equivalent of Mohanam in Hindustani music is Bhoop [1] (or Bhopali [2]).

It is one of the common pentatonic scales across the world [1] and is very popular in East Asian and South-east Asian music, including China and Japan.

Structure and Lakshana

Mohanam scale with shadjam at C

Mohanam is a symmetric rāgam that does not contain madhyamam or nishādham. It is a symmetric pentatonic scale (audava-audava ragam [1] [2] in Carnatic music classification - audava meaning ‘of 5’). Its ārohaṇa-avarohaṇa structure (ascending and descending scale) is as follows (see swaras in Carnatic music for details on below notation and terms):

ārohaṇa : S R2 G3 P D2 S

avarohaṇa : S D2 P G3 R2 S

(the notes used in this scale are shadjam, chathusruthi rishabham, antara gandharam, panchamam, chathusruthi dhaivatham)

Mohanam is considered a janya rāgam of Harikambhoji, the 28th Melakarta rāgam, though it can be derived from other melakarta rāgams, Kalyani, Sankarabharanam or Vachaspati, by dropping both madhyamam and nishādham. The hindustani equivalent Bhoop is associated with Kalyan thaat (equivalent of Kalyani).

 References

^ a b c Ragas in Carnatic music by Dr. S. Bhagyalekshmy, Pub. 1990, CBH Publications

^ a b Raganidhi by P. Subba Rao, Pub. 1964, The Music Academy of Madras

From “http://en.wikipedia.org/wiki/Mohanam"