A member of the class of isoquinolines that is the sulfonamide formed by the formal condensation of the sulfo group of 4-methylisoquinoline-5-sulfonic acid with the 1-amino group of (S)-2-methyl-1,4-diazepane. ChEBI: (S)-2-methyl-1-(4-methylisoquinoline-5-sulfonyl)-1,4-diazepane is a member of the class of isoquinolines that is the sulfonamide formed by the formal condensation of the sulfo group of 4-methylisoquinoline-5-sulfonic acid with the 1-amino group of (S)-2-methyl-1,4-diazepane. It has a role as an EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor. It is a member of isoquinolines and a N-sulfonyldiazepane. It is a conjugate base of a (S)-2-methyl-1-(4-methylisoquinoline-5-sulfonyl)-1,4-diazepane(2+).