A member of Emperor Rudolph II's circle of scientists and sages, he is believed by some authorities to have been a pioneer chemist and a discoverer of oxygen, long before Lavoisier (Sendivogius' works were studied by leading scientists, including Isaac Newton).
Keiser Rudolf II teadlaste ja tarkade ringi liikmena oli ta mõne autoriteedi arvates teerajaja-keemik ja hapniku avastaja, kaua enne Lavoisier'd (Sendivogiuse töid uurisid juhtivad teadlased, sealhulgas Isaac Newton).