Romanian major

Romanian major, also known as lydian dominant flat 2 or flat 9, is a musical scale, noted for its flattened 2nd and sharpened fourth degrees, the latter a distinctive feature of Romanian traditional music. A C Romanian major scale has the notes C, D, E, F, G, A, B, which is 1, 2, 3, 4, 5, 6, 7. Though it is called a major scale, it is typically played over a C13 (9) (11) (also F major over C) dominant chord. 
The 5th mode, Jazz minor flat 5, also known as Jeth's Mode, is a jazz minor or melodic minor scale with a flattened 5th, and is named after Dutch composer Willem Jeths. It can also be thought of as a whole half diminished scale omitting the augmented fifth. It can be used for soloing instead of regular jazz minor. The Jazz minor flat 5 mode in C contains the notes C, D, E, F, G , A, B, which has the formula 1, 2, 3, 4, 5, 6, 7.
Modes.
The scale contains the following modes: