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209168-88-7

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209168-88-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209168-88-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,1,6 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 209168-88:
(8*2)+(7*0)+(6*9)+(5*1)+(4*6)+(3*8)+(2*8)+(1*8)=147
147 % 10 = 7
So 209168-88-7 is a valid CAS Registry Number.

209168-88-7Relevant articles and documents

Synthesis of the brominated marine alkaloids (±)-arborescidine A, B and C

Burm, Brigitte E.A.,Meijler, Michael M.,Korver, Jacco,Wanner, Martin J.,Koomen, Gerrit-Jan

, p. 6135 - 6146 (1998)

A straightforward synthesis of the brominated marine alkaloids arborescidine A (1), B (2) and C (3), starting from 6-bromo-(N-methyl) trypatamine is described. An equilibrium, under both basic and acidic conditions was found to exist between the trans- and cis-isomers 3 and 4. Spectral data indicated that the structure of isomer 4 does not correspond with the compound identified as arborescidine D recently isolated from the marine tunicate Pseudodistoma arborescens.

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