131267-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131267-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,6 and 7 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131267-41:
(8*1)+(7*3)+(6*1)+(5*2)+(4*6)+(3*7)+(2*4)+(1*1)=99
99 % 10 = 9
So 131267-41-9 is a valid CAS Registry Number.
131267-41-9Relevant 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
