Abstract: A method for establishing at least one profile in an eUICC includes: a) generating, within the eUICC, some of the profile data, known as on-board generated profile data; the method is characterized by the following steps: c) transferring all or part of the on-board generated profile data from the eUICC to a verifier entity; d) at the verifier entity, using the transferred on-board generated profile data and verification criteria and information to generate a verification result, which indicates either successful or unsuccessful verification of the on-board generated profile data, and sending this verification result from the verifier entity to a state manager entity; e) the state manager entity then setting the operational state of the profile in the eUICC only if the verification result indicates a successful verification; if the verification result indicates a failure, it prevents the profile from being operational.

Abstract: A method for the isolation of 2-hydroxy-4-methylthiobutyric acid (MHA), wherein MHA is isolated from a reaction mixture obtained by addition of hydrogen cyanide (HCN) to methylmercaptopropionaldehyde (MMP) and hydrolysis by sulphuric acid of the methylmercaptopropionaldehyde cyanohydrin (MMP-CH) thus obtained. The reaction mixture is brought into contact in a liquid/liquid extraction system with an organic solvent substantially immiscible with water, in order to form an extraction solution which contains the solvent and the MHA transferred out of the reaction mixture. By bringing the salt content of the reaction mixture, prior to the liquid/liquid extraction, to a concentration of about >50 wt. % (wt./wt.), preferably >55 wt.