81890-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81890-23-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,9 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81890-23:
(7*8)+(6*1)+(5*8)+(4*9)+(3*0)+(2*2)+(1*3)=145
145 % 10 = 5
So 81890-23-5 is a valid CAS Registry Number.
81890-23-5Relevant academic research and scientific papers
THERMAL ADDITION OF XANTHENETHIONE TO ALLENES: "A CONCERTED TWO STEP" (?2s+?2s+?2s)-CYCLOADDITION
Kamphuis, J.,Visser, R. G.,Bos, H. J. T.
, p. 3603 - 3604 (2007/10/02)
(2+2)- and (4+2)-cycloadducts are formed by thermal reaction of xanthenethione with allenes.Activation parameters for this "concerted two step" (?2s+?2s+?2s)-reaction are presented.
