A dominant ninth suspended fourth chord is composed using a root/1st, perfect 4th, perfect 5th, minor 7th and major 9th (or R/1-4-5-♭7-9) intervals played simultaneously. Generally written as C9sus4 or C9sus, it is good practice to simply use an uppercase C followed by a super scripted 9sus4 to represent it in writing (ie: C9sus4) however it is also common to see it written as C9sus with the presumption of a suspended fourth and not suspended second.
Dominant ninth suspended fourth chord profile
|Intervals||root/1st, perfect 4th, perfect 5th, minor 7th, major 9th or R/1-4-5-♭7-9|
|Common names (examples in C)||C9sus4, C9sus|
|C Dominant ninth suspended fourth chord voicing #3|