MOSCOW, May 14 (Reuters) - The Russian rouble slightly

strengthened against the U.S. dollar on Tuesday. By 07:44 GMT,

the rouble was 0.11% lower at 91.45 to the dollar

after trading in a range of 91.145 to 91.648.

Against the euro, the rouble fell 0.1%

to 98.65 and was down 0.17% to 12.60 against the yuan

.

Brent crude oil, a global benchmark for Russia's

main export, were flat at $83.33 a barrel.

Russian stock indexes rose. The dollar-denominated RTS index

decreased 0.02% to 1,193.28. The rouble-based MOEX

Russian index gained 0.16% to 3,462.69.

($1 = 91.1775 roubles)