The expulsion means Adriano will miss Inter's next match against Bremen.
"It will actually help Adriano, it will let him rest," Inter defender Ivan Cordoba said. "This draw was just what we needed, the important thing was to get the one point to advance."
Bremen looks almost certain to join Inter in the second round after knocking out Anderlecht with a 5-1 beating. Klasnic followed up his two goals in Bremen's 2-1 victory in Brussels with three more at home.
Juventus hopes to advance to the second round by beating Bayern Munich in one of Wednesday's games. The Serie A leader leads the four-time European Cup winner by three points by beating Bayern 1-0 two weeks ago.
Wigan Athletic stayed six points clear of its rivals in the race for promotion to the Premier League when Lee McCulloch's late strike earned a 1-0 victory at Stoke.
The victory means that Paul Jewell's team is unbeaten in 17 games. But Joe Royle's Ipswich stayed six points behind after a 5-1 beating of Sheffield United with Shefki Kuqi scoring twice.
Of the other contenders for gaining places in the top flight next season, Sunderland earned a 3-1 victory over struggling Wolves, which fired manager Dave Jones on Monday.
Reading scored a late equalizer in a 2-2 tie at Plymouth and Queens Park Rangers hit back to tie 1-1 with cross-London rival Millwall. The big surprise of the night was West Ham's 4-1 loss at lowly Cardiff.
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