17851-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17851-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,5 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17851-44:
(7*1)+(6*7)+(5*8)+(4*5)+(3*1)+(2*4)+(1*4)=124
124 % 10 = 4
So 17851-44-4 is a valid CAS Registry Number.
17851-44-4Relevant articles and documents
The First Tandem [2 + 2] Cycloaddition-Michael Reaction Using Ynolates: Facile Construction of Substituted Carbocycles
Shindo, Mitsuru,Matsumoto, Kenji,Sato, Yusuke,Shishido, Kozo
, p. 2029 - 2030 (2007/10/03)
(matrix presented) A tandem [2 + 2] cycloaddition-Michael reaction using ynolate anions followed by decarboxylation produced polysubstituted five-, six-, and seven-membered cycloalkenes.