108473-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 108473-04-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,4,7 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 108473-04:
(8*1)+(7*0)+(6*8)+(5*4)+(4*7)+(3*3)+(2*0)+(1*4)=117
117 % 10 = 7
So 108473-04-7 is a valid CAS Registry Number.
108473-04-7Relevant articles and documents
Preparation of 6-ethynylpteridine derivatives by Sonogashira coupling
Nxumalo, Winston,Dinsmore, Andrew
, p. 79 - 89 (2013/03/14)
Sonogashira coupling of 6-sulfonyloxypteridine with various acetylenes is reported. Hydrolysis of the protecting groups with 1M NH3 gave the 6-subustituted 2,4-diaminopteridine while hydrolysis with 1M NaOH gave the 6-subsituted pterin.
