13723-12-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13723-12-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,2 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13723-12:
(7*1)+(6*3)+(5*7)+(4*2)+(3*3)+(2*1)+(1*2)=81
81 % 10 = 1
So 13723-12-1 is a valid CAS Registry Number.
13723-12-1Relevant articles and documents
Reactions of 4-Hydroxythiocoumarins with Schiff Bases
Merchant, J. R.,Martyres, Gail
, p. 35 - 36 (2007/10/02)
4-Hydroxycoumarin and 4-hydroxythiocoumarins react with schiff bases under different conditions to give the corresponding benzylidene-bis-4-hydroxycoumarin derivatives only and not the benzopyrano-oxazines as reported from this laboratory earlier .
