It's in there, really!

DiChlor is:

SYNONYMS: Sodium Dichloroisocyanurate, Dihydrate; Sodium Dichloro-s- Triazinetrione, Dihydrate
CHEMICAL FAMILY: Chlorinated Isocyanurates


TriChlor is:

CHEMICAL NAMES & SYNONYMS: Trichloroisocyanuric acid; Trichloro-s-triazinetrione
CHEMICAL FAMILY: Chlorinated Isocyanurates

There's no way to have dichlor or trichlor without CYA.

Michael