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108344-52-1

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108344-52-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108344-52-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,3,4 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 108344-52:
(8*1)+(7*0)+(6*8)+(5*3)+(4*4)+(3*4)+(2*5)+(1*2)=111
111 % 10 = 1
So 108344-52-1 is a valid CAS Registry Number.

108344-52-1Downstream Products

108344-52-1Relevant articles and documents

Synthesis of Bufalitoxin and Bufotoxin

Pettit, George R.,Kamano, Yoshiaki,Drasar, Pavel,Inoue, Masuo,Knight, John C.

, p. 3573 - 3578 (2007/10/02)

Completion of a formal total synthetic route to the toad venom constituents bufotalin (8), cinobufagin (2a), bufalitoxin (3f), and bufotoxin (1a) has been accomplished.Bufalin (3a) was employed as relay and converted to 14-dehydrobufalin 3-acetate (4).Selective oxidation of olefin 4 with a chromium trioxide-pyridine reagent afforded 16-ketone 5, which we had previously transformed to bufotalin (8) and thence to cinobufagin (2a).Condensation of bufalin (3a) with suberic anhydride followed by a mixed carbonic anhydride reaction sequence using arginine monohydrochloride yielded bufalitoxin (3f), and an analogous route from bufotalin (8) led to bufotoxin (1a).

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