157189-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157189-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,1,8 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 157189-70:
(8*1)+(7*5)+(6*7)+(5*1)+(4*8)+(3*9)+(2*7)+(1*0)=163
163 % 10 = 3
So 157189-70-3 is a valid CAS Registry Number.
157189-70-3Relevant academic research and scientific papers
Highly stereoselective synthesis and structural confirmation of a fungal metabolite, LL-P880β
Masaki,Imaeda,Kawai
, p. 179 - 181 (2007/10/02)
A fungal metabolite, LL-P880β [6S-(1'S,2'R-dihydroxypentyl)-4-methoxy- 5,6-dihydropyran-2-one] (1), was synthesized unambiguously from diethyl (R,R)-tartrate (3) as a chiral pool via highly stereoselective construction of the C7'-asymmetric carbon of the
