104891-11-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104891-11-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,8,9 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 104891-11:
(8*1)+(7*0)+(6*4)+(5*8)+(4*9)+(3*1)+(2*1)+(1*1)=114
114 % 10 = 4
So 104891-11-4 is a valid CAS Registry Number.
104891-11-4Relevant articles and documents
SYNTHESIS OF OPTICALLY PURE α-HALO-α'-SULPHINYL-KETONES
Bravo, Pierfrancesco,Resnati, Giuseppe
, p. 5601 - 5604 (2007/10/02)
When optically pure sulphinyl carbanions are reacted at -75 deg C with α-chloro or α-bromo carboxylic acid esters addition on the carboxyl group occurs and corresponding α-halo-α'-sulphinyl-ketones are obtained in optically pure form.
