21008-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21008-67-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,0 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21008-67:
(7*2)+(6*1)+(5*0)+(4*0)+(3*8)+(2*6)+(1*7)=63
63 % 10 = 3
So 21008-67-3 is a valid CAS Registry Number.
21008-67-3Relevant articles and documents
REGIOSELECTIVE O-DEMETHYLATION OF BISBENZYLISOQUINOLINE ALKALOIDS
Kunitomo, Jun-ichi,Oshikata, Megumi,Akasu, Michinori,Ishii, Hisashi
, p. 937 - 942 (2007/10/02)
The cleavage of methyl ethers of several bisbenzylisoquinoline alkaloids was studied and regioselective O-demethylation was observed.