One spoopy 2-reg plane thid morning, haven't seen any since the lockdown. 2-RLBL flew from Vantaa, Finland to Woensdrecht, Netherlands. 2-RLBL appears to be linked to Minsheng Financial Leasing and Bluesky 1 Leasing Company Ltd.
Planefag with chemistry experience here.
Thiophenes are the root of a lot of anti-microbial and antibiotic drugs used in AIDS, typhoid, tubercolosis, etc.
Researchgate.net/publication/288819915_Thiophene_the_molecule_of_diverse_medicinal_importance