221004-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221004-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,0 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221004-69:
(8*2)+(7*2)+(6*1)+(5*0)+(4*0)+(3*4)+(2*6)+(1*9)=69
69 % 10 = 9
So 221004-69-9 is a valid CAS Registry Number.
221004-69-9Relevant articles and documents
A convergent approach to cyclopeptide alkaloids: Total synthesis of sanjoinine G1
Temal-Laib, Taoues,Chastanet, Jacqueline,Zhu, Jieping
, p. 583 - 590 (2007/10/03)
A general strategy for the synthesis of cyclopeptide alkaloids containing an endocyclic aryl-alkyl ether bond has been developed featuring a key intramolecular SNAr reaction. The importance of the N-terminal protective group in the realization