29953-22-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 29953-22-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,9,5 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 29953-22:
(7*2)+(6*9)+(5*9)+(4*5)+(3*3)+(2*2)+(1*2)=148
148 % 10 = 8
So 29953-22-8 is a valid CAS Registry Number.
29953-22-8Relevant articles and documents
The Synthesis of Furan-derived Calixarenes
Musau, Richard M.,Whiting, Andrew
, p. 1029 - 1031 (1993)
Furan and 2-hydroxymethylfuran were reacted under Lewis acidic oligomeric precursors, for a subsequent Lewis acid catalysed cyclisation to afford the furan based calixarenes, i.e. cyclic tetramer 2a, and small quantities of the cyclic pentamer 2b, hexamer 2c and octamer 2d.