117902-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117902-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,0 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117902-87:
(8*1)+(7*1)+(6*7)+(5*9)+(4*0)+(3*2)+(2*8)+(1*7)=131
131 % 10 = 1
So 117902-87-1 is a valid CAS Registry Number.
117902-87-1Relevant academic research and scientific papers
SYNTHESIS OF REGIOISOMERS OF VARIOUS 7-O-SUBSTITUTED PRECOCENE-3 ANALOGUES
Timar, Tibor,Jaszberenyi, J. Csaba,Hosztafi, Sandor
, p. 487 - 496 (2007/10/02)
The synthesis of benzopyran compounds (VIIa-j), regioisomers of precocene-3 (II) containing various 7-O-substituents, is described .
