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29903-56-8

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29903-56-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29903-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,9,0 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 29903-56:
(7*2)+(6*9)+(5*9)+(4*0)+(3*3)+(2*5)+(1*6)=138
138 % 10 = 8
So 29903-56-8 is a valid CAS Registry Number.

29903-56-8Relevant articles and documents

Quenching Behavior of Singlet Excited 9-Arylxanthylium Cations

Valentino, Maria R.,Boyd, Mary K.

, p. 5826 - 5831 (1993)

Several 9-arylxanthylium tetrafluoroborate salts (Ar=H, p,m-F, p,m-Me, m-OMe) were synthesized by reaction of the corresponding 9-arylxanthen-9-ol with fluoroboric acid.Spectral characteristics of the xanthyl cations were identical to those previously rep

Electrophilic Reactions of Xanthylium Carbocations Produced by Flash Photolysis of 9-Xanthenols

McClelland, Robert A.,Banait, Narinder,Steenken, Steen

, p. 2929 - 2935 (2007/10/02)

The xanthylium ion and eight 9-aryl derivatives (p-MeO, p-Me, m-Me, H, p-F, m-MeO, p-Cl, and p-CF3 phenyl) were produced in 1:4 acetonitrile/water by flash photolysis of the corresponding 9-xanthenols.The identifications of the transients as xanthylium ca

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