121985-90-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121985-90-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,8 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121985-90:
(8*1)+(7*2)+(6*1)+(5*9)+(4*8)+(3*5)+(2*9)+(1*0)=138
138 % 10 = 8
So 121985-90-8 is a valid CAS Registry Number.
121985-90-8Relevant articles and documents
The Use of a Nicotinoyl Group as a Protective Group for Hydroxyl and Amino Functions
Ushida, Satoshi
, p. 59 - 60 (2007/10/02)
The effective use of a nicotinoyl group as an easily introducible and cleavable protective group for hydroxyl and amino groups is described.Deprotection by alkaline hydrolysis is performed after activation by quarternization of pyridine moiety with methyl iodide.
