116661-42-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116661-42-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,6,6 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 116661-42:
(8*1)+(7*1)+(6*6)+(5*6)+(4*6)+(3*1)+(2*4)+(1*2)=118
118 % 10 = 8
So 116661-42-8 is a valid CAS Registry Number.
116661-42-8Relevant articles and documents
ALDOL CONDENSATIONS OF CHIRAL ETHYLKETONES: CONTROL BY CHIRAL BORON REAGENTS.
Paterson, Ian,Lister, Anne M.
, p. 585 - 588 (1988)
The chiral reagents (+)- and (-)-(Ipc)2BOTf, in the presence of Et3N, are used to control the aldol condensation reactions of chiral ethylketone 5 with prochiral aldehydes.The SS isomer, 6 or 8, or SA isomer, 7 or 9, is then formed in >99 percentee and wi