122993-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 122993-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,9,9 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 122993-49:
(8*1)+(7*2)+(6*2)+(5*9)+(4*9)+(3*3)+(2*4)+(1*9)=141
141 % 10 = 1
So 122993-49-1 is a valid CAS Registry Number.
122993-49-1Relevant 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
