202645-46-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 202645-46-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,6,4 and 5 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 202645-46:
(8*2)+(7*0)+(6*2)+(5*6)+(4*4)+(3*5)+(2*4)+(1*6)=103
103 % 10 = 3
So 202645-46-3 is a valid CAS Registry Number.
202645-46-3Relevant articles and documents
Total synthesis of combretastatins D
Couladouros, Elias A.,Soufli, Ioanna C.,Moutsos, Vassilios I.,Chadha, Raj K.
, p. 33 - 43 (2007/10/03)
The 15-membered caffrane ring of the natural product group of combretastatins D is synthesized in high yield with suitably functionalized saturated seco acids. The key step is a Mitsunobu-type macrolactonization. A common synthon is used for the construct