25846-86-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25846-86-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,8,4 and 6 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 25846-86:
(7*2)+(6*5)+(5*8)+(4*4)+(3*6)+(2*8)+(1*6)=140
140 % 10 = 0
So 25846-86-0 is a valid CAS Registry Number.
25846-86-0Relevant articles and documents
Negishi coupling of pteridine-o-sulfonates
Nxumalo, Winston,Dinsmore, Andrew
, p. 42 - 46 (2013/03/28)
Negishi coupling of pteridine-O-sulfonate with Zn-aryls is reported. Hydrolysis of the protecting groups with 1MNH3 gave the 6-subustituted 2,4-diaminopteridine while hydrolysis with 1 M NaOH gave the 6-subsituted pterin.