* Goldman told clients to take profit before markets reverse
* Technicals show further retracements for Brent and U.S. oil
* Coming up: API petroleum stocks; 2030 GMT (Adds quotes, background, updates prices)
By Chikako Mogi and Risa Maeda
TOKYO, April 12 (Reuters) - U.S. crude dropped by $2 a barrel on Tuesday and Brent crude fell sharply to below $122, extending overnight losses on concern high fuel prices will destroy demand and as Goldman Sachs advised investors to lock-in commodity trading profits.
ICE Brent crude for May <LCOc1> fell $1.70 to $122.28 a barrel by 0319 GMT after sliding to as low as $121.97. The contract dropped nearly 3 percent on Monday.
U.S. crude for May delivery <CLc1> fell $1.94 to $107.98 a barrel, after hitting a session of low $107.87.
Long-term commodity bull Goldman advised its clients to take profit as there is a strong chance that commodity prices may reverse. [
]It noted "nascent signs of oil demand destruction in the United States" that could drag prices down, as well as the possibility of a Libya ceasefire. The bank also said Nigeria's elections, which had added further risk to oil markets, had thus far not caused supply disruptions.
"Open interest has been building up since the start of the new quarter in April, reflecting fresh inflows of speculative money into the oil market," said an energy analyst at a leading Japanese trading house who declined to be named.
"The Goldman report put a damper on this flow, at least for now, given that there was a sense of an overshoot in the market," he said.
The International Monetary Fund warned in its World Economic Outlook on Monday that soaring oil prices and inflation in emerging economies pose risks to the world economy but are not yet strong enough to derail it. [
]"The IMF's change of view on the U.S. economy is a catalyst which suggest high costs of imports will affect economic growth," said Jonathan Barratt, managing director Commodity Broking Services in Sydney.
Demand concerns also heightened in No. 3 oil consumer Japan, where the evacuation zone around its damaged nuclear plant was expanded because of high levels of accumulated radiation, as a strong aftershock rattled the area. [
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DEMAND, MIDDLE EAST
Weekly oil inventory reports will offer a fresh snapshot of U.S. demand and stockpiles. Analysts surveyed on Monday expected crude stocks to have risen last week, with distillate stocks dipping and gasoline stocks dropping.
Oil data from industry group the American Petroleum Institute is due at 4:30 p.m. EDT (2030 GMT) on Tuesday.
Support for the market comes on continued unrest in Libya, which has cut export supplies from the OPEC member. An African bid to halt Libya's civil war collapsed on Monday after Muammar Gaddafi's forces shelled a besieged city and rebels said there could be no deal unless he was toppled. [
]With Libyan production curbed sharply, Saudi Arabia has raised output. A senior Gulf source dismissed doubts among analysts about Saudi Arabia's claimed 12.5 million barrels per day capacity, saying such doubts were the work of speculators trying to manipulate oil prices. [
](Additional reporting by Florence Tan in Singapore; Editing by Ed Lane)