 Chemical Database: 4-Pyridinecarboxylic acid, 1,2,3,6-tetrahydro-1-4-acetylaminophenylsulfonylamino-,4-chlorop henylmethylenehydrazide EnvironmentalChemistry.comKenneth Barbalace. Chemical Database - 4-Pyridinecarboxylic acid, 1,2,3,6-tetrahydro-1-4-acetylaminophenylsulfonylamino-,4-chlorop henylmethylenehydrazide. EnvironmentalChemistry.com. 1995 - 2017. Accessed on-line: 11232017echo Chemical Database: 4-Pyridinecarboxylic acid, 1,2,3,6-tetrahydro-1-4-acetylaminophenylsulfonylamino-,4-chlorop henylmethylenehydrazide EnvironmentalChemistry.com- This page contains information on the chemical 4-Pyridinecarboxylic acid, 1,2,3,6-tetrahydro-1-4-acetylaminophenylsulfonylamino-,4-chlorop henylmethylenehydrazide including: 2 synonymsidentifiers. 