81155-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81155-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81155-91:
(7*8)+(6*1)+(5*1)+(4*5)+(3*5)+(2*9)+(1*1)=121
121 % 10 = 1
So 81155-91-1 is a valid CAS Registry Number.
81155-91-1Relevant articles and documents
INTRINSIC MIGRATION APTITUDES OF ALKYL GROUPS IN A PINACOL REARRANGEMENT
Wistuba, Eckehardt,Ruechardt, Christoph
, p. 4069 - 4072 (2007/10/02)
From rates of solvolysis of substituted cis-2-tosyloxy-cyclopentanols 3 in sodium acetate buffered acetic acid the following relative migration aptitudes were deduced: H(171); CH3(6.7); C2H5(9.7); 2-C3H7(5.2); t-C4H9(2.5); C6H5(62).