Nomination Date: 11/02/1996
Nominator: Private Individual
Rationale: Some people who used the dietary supplement L-tryptophan developed illnesses such as eosinophilia-myalgia syndrome (EMS). It was hypothesized that tryptophan microcontaminants such as 1, 1-ethylidenebis(tryptophan) (EBT) and 3-phenylamino) alanine (PAA) were responsible for the reported illnesses.
NTP Principles: not specified
Status: In Review/Pending
Agents and Status
The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.
Agent Name: 1,1-Ethylidenebis(tryptophan)
Agent Name: 3-(Phenylamino)alanine