142325-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142325-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,3,2 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 142325-56:
(8*1)+(7*4)+(6*2)+(5*3)+(4*2)+(3*5)+(2*5)+(1*6)=102
102 % 10 = 2
So 142325-56-2 is a valid CAS Registry Number.
142325-56-2Relevant articles and documents
Synthetic Studies towards Halichondrins: Synthesis of the C.27-C.38 Segment
Aicher, Thomas D.,Buszek, Keith R.,Fang, Francis G.,Forsyth, Craig J.,Jung, Sun Ho,et al.
, p. 1549 - 1552 (2007/10/02)
An efficient synthesis of the C.27-C.38 segment of halichondrins is accomplished, using the Ireland-Claisen rearrangement, Ni(II)/Cr(II)-mediated coupling and Michael reactions as the key steps.