87428-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87428-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,4,2 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87428-91:
(7*8)+(6*7)+(5*4)+(4*2)+(3*8)+(2*9)+(1*1)=169
169 % 10 = 9
So 87428-91-9 is a valid CAS Registry Number.
87428-91-9Relevant academic research and scientific papers
GENERAL METHOD FOR THE SYNTHESIS OF CHIRAL 2-OXOALKYLIDENETRIPHENYLPHOSPHORANES
Buzzetti, Franco,Barbugian, Natale,Gandolfi, Carmelo A.
, p. 2505 - 2508 (2007/10/02)
An improved method for the synthesis of chiral 3-substituted 2-oxo-alkylidenetriphenylphosphoranes and their application in the elaboration of the ω-sidechain in prostaglandins is reported.
