78503-04-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78503-04-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,5,0 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 78503-04:
(7*7)+(6*8)+(5*5)+(4*0)+(3*3)+(2*0)+(1*4)=135
135 % 10 = 5
So 78503-04-5 is a valid CAS Registry Number.
78503-04-5Relevant articles and documents
A New and Versatile Synthesis of Furans
Koenig, Horst,Graf, Fritz,Weberndoerfer, Volkmar
, p. 668 - 682 (2007/10/02)
The thermal reaction of oxazoles 1 and acetylenic dienophiles 2 provides a synthetic approach to a great variety of furans (Table 1).Scope and mechanism of this reaction are discussed.Biologically active substances of type 7 are described as examples for practical application.