Yonova, P. A. published the artcileSynthesis of 1,1′-polymethylenebis-(3-substituted) ureas and related compounds of potential biological interest, Quality Control of 18437-58-6, the publication is Dokladi na Bulgarskata Akademiya na Naukite (1999), 52(3-4), 53-56, database is CAplus.
RNHCONH(CH2)nNHCONHR [I, R = Ph, 3-FC6H4, 4-FC6H4, 3-ClC6H4, 4-ClC6H4, n = 2-6; R = 2-thiazolyl, 4-pyridyl, 4-picolyl, 3,5-dichloro-4-pyridyl, n = 6] were pred. from RNCO and H2N(CH2)nNH2 or from RNH2 and H2N(CH2)6NH2. I have antisenescence activity comparable to that of PhNHCONHPh and putrescine.
Dokladi na Bulgarskata Akademiya na Naukite published new progress about 18437-58-6. 18437-58-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 4-Amino-2-picoline, and the molecular formula is C6H11BF3KO, Quality Control of 18437-58-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem