Benzylpenicillin Benzathine (CAS No. 1538-09-6) mixed with Lecithin (CAS No. 8002-43-5) in bulk form. Benzylpenicillin Benzathine is also known as penicillin G benzathine, an antibiotic. In your letter, you stated Benzylpenicillin Benzathine will be imported as a combination product in powder form mixed with lecithin, as an excipient. Benzylpenicillin Benzathine mixed with lecithin is indicated for the treatment of bacterial infections such as strep throat, rheumatic fever and syphilis.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N296851