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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Revenues |  |
Product sales | $ 2,865,000 | $ 539,000
License revenues | 1,446,000 | 1,181,000
Royalties | 93,000 | 89,000
Sponsored research and development | 0 | 30,000
Total revenues | 4,404,000 | 1,839,000
Expenses |  |
Research and development | 2,010,000 | 3,579,000
Product costs | 267,000 | 148,000
Selling, general and administrative | 6,024,000 | 5,755,000
Depreciation and amortization | 419,000 | 233,000
Total expenses | 8,720,000 | 9,715,000
Loss from operations | (4,316,000) | (7,876,000)
Interest and miscellaneous income | 242,000 | 1,334,000
Interest and other expense | (608,000) | (963,000)
Warrant extension expense | (2,316,000) | 0
Gain on change in fair value of derivative-warrants | 1,236,000 | 3,580,000
Gain (loss) on change in fair value of derivative-preferred stock | (4,770,000) | 1,410,000
Total non operating income (expense) | (6,216,000) | 5,361,000
Net loss before state income taxes | (10,532,000) | (2,515,000)
State income taxes | 0 | 17,000
Net loss | (10,532,000) | (2,532,000)
Less preferred stock dividends | (1,999,000) | (1,774,000)
Net loss allocable to common stockholders | $ (12,531,000) | $ (4,306,000)
Basic and diluted loss per common share |  |
Net loss allocable to common stockholders (in dollars per share) | $ (0.52) | $ (0.22)
Weighted average basic and diluted common shares outstanding (in shares) | 24,178,768 | 19,983,210

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