Every character on Jiǎoluò Shūwū read as chan in any tone — 2 readings total across the four tones. Pick the tone you mean.
If you have the sound chan but not the character, here are the 2 characters read this way: 禅 (chán, meditation; Chan; to abdicate), 产 (chǎn, to produce, give birth, property, output). They split across 2 tones, so the tone is what separates them.