104655-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104655-34-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,6,5 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 104655-34:
(8*1)+(7*0)+(6*4)+(5*6)+(4*5)+(3*5)+(2*3)+(1*4)=107
107 % 10 = 7
So 104655-34-7 is a valid CAS Registry Number.
104655-34-7Relevant articles and documents
Studies in the Vilsmeier-Haack Reaction: Part XXI - A Novel Synthesis of Fluorescent 2-Hetarylindene Derivatives
Bhumgara, S. K.,Seshadri, S.
, p. 703 - 706 (2007/10/02)
A new synthesis of indenes with a 2-(2-benzoxazolyl) substituent is described.Vilsmeier formylation of 2-(β-arylethyl)benzoxazoles leads to α-formyl derivatives which on PPA cyclisation furnish the desired indene derivatives (3, 7a, 7b, 11).