166411-51-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166411-51-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,4,1 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 166411-51:
(8*1)+(7*6)+(6*6)+(5*4)+(4*1)+(3*1)+(2*5)+(1*1)=124
124 % 10 = 4
So 166411-51-4 is a valid CAS Registry Number.
166411-51-4Relevant articles and documents
SYNTHESIS OF NEW DERIVATIVES OF CARBO(HETERO)CYCLOSPIROBUTANOIC LACTONES
Kuroyan, R. A.,Pogosyan, S. A.,Grigoryan, N. P.
, p. 107 - 111 (2007/10/03)
The diethyl esters of 2-oxo-1-oxaspirononan-3,4-dicarboxylic, 2-oxo-1-oxaspirodecan-3,4-dicarboxylic and 7,7-di-methyl-1,8-dioxaspiro-decan-3,4-dicarboxylic acids (Ia-c) are transformed by hydrochloric acid into 2-oxo-1-oxa-spirononan-
