8. INCOME TAXES Net deferred tax asset (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016
Income Taxes Net Deferred Tax Asset Details
Net operating loss carryforwards	$ 70,752,000	$ 64,366,000
R&D credit	1,221,000	1,221,000
Stock-based compensation	6,292,000	6,379,000
Capitalized R&D	21,160,000	18,508,000
Vacation and other	121,000	179,000
Total deferred tax assets	99,546,000	90,653,000
Fixed assets and intangibles	(523,000)	(49,000)
Total deferred tax liability	(523,000)	(49,000)
Net deferred tax asset	99,023,000	90,604,000
Valuation allowance	(99,023,000)	(90,604,000)
DeferredTaxAssetsLiabilitiesNet	$ 0	$ 0