5-CL-ADB-A is a synthetic noids based on indazole. 5-cl-adb-a acts as a designer drug that has been sold online. 5-cl-adb-a is an anl of an amynedined 5f-adb derivative in which the methyl ester has been replaced with an amylene. The 5-CL-ADB-A is not approved as a drug, supplement or treatment in any known jurisdiction. It is only for research chemical purpose, and should never be taken by humans, or used for any kind of chemical in vivo research. 5-CL-ADB-A is sold for in vitro experimentation or for sample calibration purposes only.