903550-33-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 903550-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,3,5,5 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 903550-33:
(8*9)+(7*0)+(6*3)+(5*5)+(4*5)+(3*0)+(2*3)+(1*3)=144
144 % 10 = 4
So 903550-33-4 is a valid CAS Registry Number.
903550-33-4Relevant articles and documents
Efficient and simple synthesis of 3-aryl-1H-pyrazoles
Gérard, Anne-Laure,Bouillon, Alexandre,Mahatsekake, Clément,Collot, Valérie,Rault, Sylvain
, p. 4665 - 4669 (2007/10/03)
Efficient preparation of 3-aryl-1H-pyrazoles by reaction of 1-protected-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoles with (het)aryl halides is described. The choice of THP protecting group is discussed.
