93271-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93271-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,2,7 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 93271-52:
(7*9)+(6*3)+(5*2)+(4*7)+(3*1)+(2*5)+(1*2)=134
134 % 10 = 4
So 93271-52-4 is a valid CAS Registry Number.
93271-52-4Relevant articles and documents
RESEARCH ON UNSATURATED LACTONES. 91.* SELECTIVE OXIDATION OF THE BROMOETHYL GROUP IN SUBSTITUTED 2-BUTEN-4-OLIDES
Avetisyan, A. A.,Ovsepyan, V. V.,Tokmadzhyan, G. G.
, p. 594 - 598 (2007/10/02)
The selective oxidation of the bromomethyl group to a formyl group was realized by the direct action of dimethyl sulfoxide on 2-ethoxycarbonyl-3-bromomethyl-4,4-dialkyl(cycloalkyl)-2-buten-4-olides.
