8. INCOME TAXES Net deferred tax asset (Details) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Income Taxes Net Deferred Tax Asset
Net operating loss carryforwards	$ 5,052,000	$ 70,752,000
R&D credit	1,221,000	1,221,000
Stock-based compensation	3,097,000	6,292,000
Capitalized R&D	15,518,000	21,160,000
Vacation and other	544,000	121,000
Total deferred tax assets	25,432,000	99,546,000
Fixed assets and intangibles	(634,000)	(523,000)
Total deferred tax liability	(634,000)	(523,000)
Net deferred tax asset	24,798,000	99,023,000
Valuation allowance	(24,798,000)	(99,023,000)
DeferredTaxAssetsLiabilitiesNet	$ 0	$ 0