The registration is now closed due to reaching the maximum number of participants.


8 April 2024: Registration opens
31 May 2024: Deadline for early registration

The number of registrations is limited to 300 attendees. Early registration is recommended.


Early bird
Until May 31, 2024
Late bird
From June 1 to June 16, 2024
Full fee (without Social event no July 09) 400 480
Student fee* (without Social event no July 09) 250 300
Full fee (including Social event on July 09) 420 500
Student fee* (including Social event on July 09) 270 320
Accompanying Persons 70 70

All prices above include VAT (21%). Registration fees are in euros.

*The reduced student fee is available for bachelor's, master's, and doctoral students.

The registration fee includes
• Admission to scientific sessions
• Conference materials
• Coffee/refreshments during breaks
• Lunches
• Welcome reception
• Social event (optional) – 20 eur


Registration is now closed due to reaching the maximum number of participants.

Registration Information

  • After filling out the registration form and making the payment, you will receive an automatic registration confirmation from containing a summary of the selected options.
  • If you did not receive the e-mail confirming that the registration is complete, please check your spam filter. If it is not here, please contact
  • The participant/payer is responsible for any bank charges/fees associated with the payment.
  • If you have card issues, please contact

For Group Registrations and Payments
If you prefer group registration (for more than 2 participants) with payment via bank transfer:

  • Download and fill out the group registration form (download here).
  • Email the form and payer details (full name, VAT (if applicable), address) to

We'll issue an invoice for the payment. After payment is received, each group member will receive a confirmation email from, confirming their registration.

Accompanying Persons' Registration and Payments
Delegates attending BOS 2024 have the opportunity to register a partner or family member to join them during the social activities.

Accompanying Person Benefits:
• Conference welcome on June 7, 2024, including entrance to the National Museum, Refreshments, and Drinks.
• Social event on July 9, 2024, featuring Latvian tradition (includes dinner and entertainment).

To register an accompanying person, please provide their name and surname via email: Upon registration, you will receive instructions on where to pay the registration fee for the accompanying person.

Cancellation policy and refunds

  • Notification of cancellation must be sent in writing to
  • In case of cancellation of registration until 1 June 2024, the total amount, except for a cancellation fee of 50 euros, will be refunded. In case of later cancellation, the registration fee will not be refunded.
  • No refunds will be granted to non-attendees.


The invoice will be issued after the payment confirmation in pdf format is mailed to e-mail address -
The invoice will be sent as a PDF attachment.

Invitation letter

Invitation letters for visa purposes are available only to registered participants. Registration must be complete, and payment received to receive your invitation letter. Request fot Invitation letter must be made in writing and sent to the conference secretariat, e-mail:

Privacy Policy

By registering for the conference, you acknowledge and agree that your data will be processed following the EU General Data Protection Regulation (GDPR). Your data will be used solely for conference registration, providing payment options, and informing you about any changes to the event schedule.

The Latvian Institute of Organic Synthesis (LIOS) is the organizer of the Balticum Organicum Syntheticum 2024 conference. To administer and organize the conference, the LIOS must collect and process personal data. You can learn more about LIOS's data handling procedures by visiting the following link:

The personal data provided in the event registration form will be retained by LIOS for 30 (thirty) days after the event, after which the data will be securely deleted.

You have the right to request access to your data held by LIOS, request correction or deletion of inaccurate personal data by justifying the request, request restriction of processing of personal data in cases provided by law, and object to the processing. For inquiries regarding the processing of personal data or alleged violations in the processing of personal data, you may contact the Data Protection Officer at LIOS or file a complaint with the supervisory authority, the Data State Inspectorate of the Republic of Latvia.

You also have the right to withdraw your consent at any time without adverse consequences by sending a notification to the email address: Please note that withdrawal of consent does not affect the lawfulness of processing based on consent before its withdrawal.

Data Controller: Latvian Institute of Organic Synthesis, Aizkraukles Street 21, Riga, LV-1006, Latvia Privacy Policy:
Data Protection Officer Email: