181641-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181641-19-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,6,4 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181641-19:
(8*1)+(7*8)+(6*1)+(5*6)+(4*4)+(3*1)+(2*1)+(1*9)=130
130 % 10 = 0
So 181641-19-0 is a valid CAS Registry Number.
181641-19-0Relevant academic research and scientific papers
Cis- and trans-1,7,9-trioxadispiro[5.1.5.3]hexadecane: Synthetic studies
McGarvey, Glenn J.,Stepanian, Marshall W.
, p. 5461 - 5464 (2007/10/03)
The first synthesis of the title compounds via thermodynamic spirocyclization of a diketodiol 2 is described. Three convergent synthetic approaches to protected derivatives of 2 have been developed, all of which have been converted into a 1.70:1.00 mixtur
