89503-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89503-42-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,5,0 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 89503-42:
(7*8)+(6*9)+(5*5)+(4*0)+(3*3)+(2*4)+(1*2)=154
154 % 10 = 4
So 89503-42-4 is a valid CAS Registry Number.
89503-42-4Relevant articles and documents
NOVEL APPROACH TO THE STEREOSELECTIVE SYNTHESIS OF POLYPRENOLS VIA DIRECTED ALDOL CONDENSATION. PREPARATION OF HEPTAPRENOLS ωtttcccOH AND ωtttcctOH.
Grigorieva, N. Ya.,Avrutov, I. M.,Semenovsky, A. V.
, p. 5531 - 5534 (2007/10/02)
New convenient and stereoselective route to linear isoprenoids including the construction of Z-trisubstituted double bond is elaborated based on directed aldol condensation.
