137956-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137956-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,9,5 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137956-83:
(8*1)+(7*3)+(6*7)+(5*9)+(4*5)+(3*6)+(2*8)+(1*3)=173
173 % 10 = 3
So 137956-83-3 is a valid CAS Registry Number.
137956-83-3Relevant academic research and scientific papers
S,S'-Diethyl Dithiomalonate as Ethanol Carbanion Equivalent in Annelation Reactions
Liu, Hsing-Jang,Han, Yongxin
, p. 1484 - 1485 (2007/10/02)
S,S'-Diethyl dithiomalonate 1 undergoes concomitant alkylation reaction and Michael addition with ω-iodo-α,β-unsaturated ketones; the thiomalonate group present in the cyclization products can be easily reduced by Raney nickel to ethanol level.
