A 34-year-old Lawrence man and his Tonganoxie father were sentenced Tuesday to about eight years in federal prison after launching a “global sales and supply network” for synthetic marijuana, U.S. Attorney Barry Grissom said.

Jonathan Sloan received a 96-month sentence, and his 55-year-old father Clark Sloan received an 87-month sentence Tuesday for violating the federal Food, Drug and Cosmetic Act, Grissom said. In September, they were each convicted in a federal jury trial of trafficking synthetic marijuana out of retail stores in Lawrence and Tonganoxie, the U.S. District Attorney’s office said.

The men sold marijuana substitute K2 out of Persephone’s Journey, 1103 Massachusetts St., and Bouncing Bear Botanicals, located in the basement of Persephone’s Journey, according to the U.S. District Attorney’s office.

Bouncing Bear Botanicals was later moved to a warehouse in Tonganoxie.

The business grew to encompass a chain of suppliers, retailers, wholesalers and business associates with locations in Kansas, California, Massachusetts, New Jersey, Oregon, Nevada, Indiana, Argentina, Latvia, Germany, Lithuania, the United Kingdom, Ukraine, the Netherlands, Canada, Sweden, Singapore, Thailand and Uruguay, the U.S. District Attorney’s office said. The defendants made at least $3.3 million from the sale of the drugs.

A federal jury convicted the men of one count of conspiracy, two counts of misbranding, 15 counts of mail fraud, one count of smuggling and one count of money laundering, the U.S. District Attonrey’s office said.