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I searched for ROSENTHAL (soundex search) and town Chernivtsi at The JewishGen Unified Databases, and I found 33 burial records at a cemetery in Chernivtsi on Zelena Street.
Most spelled ROSENTHAL, but a few spelled ROZENTHAL. Perhaps you will recognize some of the names (there are photos of the stones.)
According to this site: http://iajgscemetery.org/eastern-europe/ukraine/chernivtsi
The cemetery on Zelena Street is at the Chernivtsi at coordinates 48°18' N, 25°56' E.
Also found a testimony of Rozental' Shmil' Srulevich
which mentions the Chernivtsi at coordinates 48°32' N 28°07' E.
Good luck in your search,
RATOWSKY / CHAIMSON (Ariogala, Lith.); LEFFENFELD / FINK / KALTER (Daliowa & Jasliska, Pol.)
BOJDA / BLEIWEISS (Tarnow & Tarnobrzeg, Pol.); WALTZMAN / WALZMAN (Ustrzyki Dolne, Pol.)
LEVY (Tyrawa Woloska, Pol.); SOLON / SOLAN / SOKOLSKY (Grodek, Bialystok, Pol.)
BOBISH / BLUMENKRANZ / APPEL / WEINER / ROSENBERG (Vysoko-Litovsk, Brest, Biala Podlaska)