136457-92-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136457-92-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,4,5 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 136457-92:
(8*1)+(7*3)+(6*6)+(5*4)+(4*5)+(3*7)+(2*9)+(1*2)=146
146 % 10 = 6
So 136457-92-6 is a valid CAS Registry Number.
136457-92-6Relevant academic research and scientific papers
Stereoselective Z- and E-Bromo Enol Lactonization of Alkynoic Acids
Dai, Wei,Katzenellenbogen, John A.
, p. 6893 - 6896 (2007/10/02)
We have found that treatment of the silver salt of a 4- or 5-terminal alkynoic acid with bromine results in clean formation of the corresponding Z-bromo enol lactone, the result of a formal cis addition of carboxylate and bromine across the triple bond.Th
