131347-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131347-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,4 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131347-68:
(8*1)+(7*3)+(6*1)+(5*3)+(4*4)+(3*7)+(2*6)+(1*8)=107
107 % 10 = 7
So 131347-68-7 is a valid CAS Registry Number.
131347-68-7Relevant articles and documents
Synthesis of 2',3'-dideoxy-2',3'-α-methanocytidine
Beard, Andrew R.,Butler, Paul I.,Mann, John,Partlett, Neil K.
, p. 87 - 91 (2007/10/02)
A six-stage synthesis of 2',3'-dideoxy-2',3'-α-methanocytidine (3) from (5S)-5-benzoyloxymethyl-(5H)-furan-2-one (5) is described.The key step involved the stereoselective formation of (1R,4S,5S)-4-benzoyloxymethyl-3-oxabicyclohexan-2-one (7) via 1