17687-22-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17687-22-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,8 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17687-22:
(7*1)+(6*7)+(5*6)+(4*8)+(3*7)+(2*2)+(1*2)=138
138 % 10 = 8
So 17687-22-8 is a valid CAS Registry Number.
InChI:InChI=1/C5H3IN2O4/c6-1-2(4(10)11)7-5(12)8-3(1)9/h(H,10,11)(H2,7,8,9,12)
17687-22-8Relevant articles and documents
AN EFFICIENT METHOD FOR THE IODINATION OF C5-POSITION OF DIALKOXY PYRIMIDINES AND URACIL BASES
Das, Biswajit,Kundu, Nitya G.
, p. 855 - 868 (2007/10/02)
N-Iodosuccinimide in trifluoroacetic acid and trifluoroacetic anhydride was found to be an excellent reagent for the conversion of 2,4-dialkoxy pyrimidines to 2,4-dialkoxy-5-iodopyrimidines.Iodination at C5-position of uracil and its derivatives was also accomplished with the above reagent.