113369-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113369-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,3,6 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 113369-21:
(8*1)+(7*1)+(6*3)+(5*3)+(4*6)+(3*9)+(2*2)+(1*1)=104
104 % 10 = 4
So 113369-21-4 is a valid CAS Registry Number.
113369-21-4Relevant articles and documents
SEMICARBAZONES AND THIOSEMICARBAZONES OF THE HETEROCYCLIC SERIES. LI. RECYCLIZATION OF ISATIN α-THIOACYLHYDRAZONES
Tomchin, A. B.
, p. 779 - 789 (2007/10/02)
2-Thiosemicarbazones and other thioacylhydrazones of isatin undergo recyclization in an acidic medium (and also in the absence of the acid in the case of thiobenzylhydrazones).The five-membered ring is first cleaved with the addition of water and the form
