672295-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 672295-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,2,2,9 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 672295-31:
(8*6)+(7*7)+(6*2)+(5*2)+(4*9)+(3*5)+(2*3)+(1*1)=177
177 % 10 = 7
So 672295-31-7 is a valid CAS Registry Number.
672295-31-7Relevant articles and documents
An Expeditious Nazarov Cyclization Strategy toward the Hydroazulene Core of Guanacastepene A
Chiu, Pauline,Li, Shuoliang
, p. 613 - 616 (2007/10/03)
(Matrix presented) The hydroazulene core of guanacastepene A has been synthesized in five steps from commercially available starting materials using a classical Nazarov cyclization to install the stereochemistry in the cyclopentanone diastereoselectively.
