172974-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172974-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,7 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 172974-50:
(8*1)+(7*7)+(6*2)+(5*9)+(4*7)+(3*4)+(2*5)+(1*0)=164
164 % 10 = 4
So 172974-50-4 is a valid CAS Registry Number.
172974-50-4Relevant articles and documents
Total synthesis of the thymidine analogue of sinefungin
Barton,Gero,Negron,Quiclet-Sire,Samadi,Vincent
, p. 1619 - 1630 (1995)
The carbon skeleton of 'Sinethymidin' 4 was constructed by two radical coupling reaction. The first step was a coupling of the radical derived from 2 and the unsaturated amide 5. The olefin 6 thus obtained was added to the radical derived from the known N
