81113-46-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81113-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,1 and 3 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81113-46:
(7*8)+(6*1)+(5*1)+(4*1)+(3*3)+(2*4)+(1*6)=94
94 % 10 = 4
So 81113-46-4 is a valid CAS Registry Number.
81113-46-4Relevant articles and documents
THE REACTION OF DIAZOACETIC ESTER WITH THIOBENZOPHENONE
Kalwinsch, Ivars,Huisgen, Rolf
, p. 3941 - 3944 (1981)
Methyl diazoacetate reacts with two equivalents of thiobenzophenone to furnish two isomeric 1,3-dithiolanes and nitrogen; the intermediate thiocarbonyl ylide is intercepted by 1,3-dipolar cycloaddition or undergoes electrocyclic ring closure.
