157436-33-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157436-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,3 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157436-33:
(8*1)+(7*5)+(6*7)+(5*4)+(4*3)+(3*6)+(2*3)+(1*3)=144
144 % 10 = 4
So 157436-33-4 is a valid CAS Registry Number.
157436-33-4Relevant articles and documents
Synthesis of Chiral C2-Symmetric Binucleating Ligands
Fahrni, Christoph J.,Pfaltz, Andreas
, p. 491 - 506 (2007/10/03)
The synthesis of a series of chiral enantiomerically pure C2-symmetric binucleating ligands is reported. Ligands of type 1-4, which consist of a phenolic or heterocyclic unit bridging two chiral dihydrooxazole rings, are readily accessible from
