87658-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87658-28-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,5 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 87658-28:
(7*8)+(6*7)+(5*6)+(4*5)+(3*8)+(2*2)+(1*8)=184
184 % 10 = 4
So 87658-28-4 is a valid CAS Registry Number.
87658-28-4Relevant articles and documents
Mixed bidentate ligands: The first chiral phosphonite-phosphite
T. Reetz, Manfred,Pastó, Mireia
, p. 3315 - 3317 (2000)
The chiral bidentate phosphonite-phosphite ligand (R)-4-((R)-2- naphtho[1,2-f]naphtho[2,1-d]1,3,2-dioxaphosphepin-4-ylphenoxy)naphtho[1,2- f]naphtho[2,1-d]1,3,2-dioxaphosphepin is accessible in three simple steps starting from o-bromophenol. (C) 2000 Else
