191034-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191034-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,0,3 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 191034-82:
(8*1)+(7*9)+(6*1)+(5*0)+(4*3)+(3*4)+(2*8)+(1*2)=119
119 % 10 = 9
So 191034-82-9 is a valid CAS Registry Number.
191034-82-9Relevant academic research and scientific papers
Stereocontrolled synthesis of a nonracemic vitamin B12 A-B semicorrin
Mulzer, Johann,List, Benjamin,Bats, Jan W.
, p. 5512 - 5518 (2007/10/03)
The first synthesis of a vitamin B12 A-B semicorrin 44 is described. Both A and B rings were prepared from the same precursor, enamide 40, which is obtained by a sequence of sigmatropic rearrangements and a biomimetic oxylactonization. The coup
