66969-81-1 Usage
Uses
Tiodazosin, is a potent competitive postsynaptic alpha adrenergic receptor antagonist.
Check Digit Verification of cas no
The CAS Registry Mumber 66969-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,6 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66969-81:
(7*6)+(6*6)+(5*9)+(4*6)+(3*9)+(2*8)+(1*1)=191
191 % 10 = 1
So 66969-81-1 is a valid CAS Registry Number.
InChI:InChI=1/C18H21N7O4S/c1-27-12-8-10-11(9-13(12)28-2)20-17(21-14(10)19)25-6-4-24(5-7-25)16(26)15-22-23-18(29-15)30-3/h8-9H,4-7H2,1-3H3,(H2,19,20,21)
66969-81-1Relevant articles and documents
Levulinic acid salt
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, (2008/06/13)
The invention concerns a levulinic acid addition salt of the antihypertensive agent 4-amino-6,7-dimethoxy-2-[4-(5-methylthio-1,3,4-oxadiazole-2-carbonyl]piperazin-1-yl)quinazoline in which the base to acid mole ratio is 1 to from 1.25-1.35. The salt is characterized in having improved water solubility and stability compared to the levulinate salt having a 1:1 ratio of base to acid.
