2,4-DIHYDRO-5-METHYL-2-(4-METHYLPHENYL)-3H-PYRAZOL-3-ONE

BROMAMINE ACID

META PHENYLENE DIAMINE-4-SULPHONIC ACID

N METHYL ANILINE

MIXED CLEVES ACID

TOBIAS ACID

H ACID

J ACID

K ACID

3,3′-DICHLOROBENZIDINE DIHYDROCHLORIDE（DCB）

1,2-BIS-(O-AMINOPHENOXY)ETHANE