188057-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188057-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,0,5 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188057-19:
(8*1)+(7*8)+(6*8)+(5*0)+(4*5)+(3*7)+(2*1)+(1*9)=164
164 % 10 = 4
So 188057-19-4 is a valid CAS Registry Number.
188057-19-4Relevant articles and documents
Synthesis of the spore photoproduct
Nicewonger, Robb,Begley, Tadhg P.
, p. 935 - 936 (2007/10/03)
The spore photoproduct was synthesized in seven steps from dihydrothymine and 5-formyluracil using a mixed Aldol coupling as the key bond forming step.