191091-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191091-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,0,9 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 191091-90:
(8*1)+(7*9)+(6*1)+(5*0)+(4*9)+(3*1)+(2*9)+(1*0)=134
134 % 10 = 4
So 191091-90-4 is a valid CAS Registry Number.
191091-90-4Relevant academic research and scientific papers
Azaspiro derivatives with 5HT1B activity
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, (2008/06/13)
PCT No. PCT/EP96/04657 Sec. 371 Date May 8, 1998 Sec. 102(e) Date May 8, 1998 PCT Filed Oct. 23, 1996 PCT Pub. No. WO97/17350 PCT Pub. Date May 15, 1997Compounds of formula (I) in which B is oxygen, CR17R18 or NR19 where R17, R18 and R19 are independently