1133820-51-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1133820-51-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,3,8,2 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1133820-51:
(9*1)+(8*1)+(7*3)+(6*3)+(5*8)+(4*2)+(3*0)+(2*5)+(1*1)=115
115 % 10 = 5
So 1133820-51-5 is a valid CAS Registry Number.
1133820-51-5Relevant articles and documents
Efficient synthesis of heterocyclic compounds using ethenetricarboxylic acid diesters
Yamazaki, Shoko,Iwata, Yuko,Fukushima, Yugo
scheme or table, p. 655 - 659 (2009/06/20)
Ethenetricarboxylic acid diester 1a is a useful compound bearing two reactive sites, a CO2H group and a Michael acceptor. Reactions of 1a and reagents with oxygen and nitrogen nucleophilic moieties have been examined. The reaction of 1a with 2-
