COMPOSITIONS AND METHODS AND RELATED USES Russian patent published in 2024 - IPC C07C211/63 C07C309/33 C09K11/06 C10L1/24 G01N33/28 

FIELD: fuel industry.

SUBSTANCE: invention relates to a compound of formula (I), where p ranges from 2 to 4, n is at least 1 and is less than or equal to p, Ar is a polycyclic aromatic moiety based on pyrene or an isomer thereof, R¹ is hydrogen or an unsubstituted alkyl, alkenyl or aralkyl group, and each of R², R³ and R⁴ independently represents an unsubstituted alkyl, alkenyl or aralkyl group, provided that at least one of R², R³ and R⁴ contains at least 6 carbon atoms. Also disclosed is a method of producing a compound of formula (I), a fuel additive composition, a fuel composition, a method of producing a fuel composition, use of a compound of formula (I) as a fluorescent marker, a method for determining the presence of an additive in a fuel composition, methods for determining concentration of an additive in a fuel composition and a kit for determining concentration of a compound of formula (I).

EFFECT: disclosed compound has useful properties of marker compounds suitable for use in compositions of fuel additives.

22 cl, 2 dwg, 3 ex