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128425-80-9

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128425-80-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128425-80-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,2 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128425-80:
(8*1)+(7*2)+(6*8)+(5*4)+(4*2)+(3*5)+(2*8)+(1*0)=129
129 % 10 = 9
So 128425-80-9 is a valid CAS Registry Number.

128425-80-9Downstream Products

128425-80-9Relevant articles and documents

Some Isoindolo-fused Heterocyclic Systems by Cyclodehydration of N-Arylalkyl-3-hydroxyphthalimidines

Hitchings, Gregory J.,Helliwell, Madeleine,Vernon, John M.

, p. 83 - 87 (2007/10/02)

α-Hydroxy-lactams formed by reduction or Grignard addition to appropriately N-substituted phthalimides (1a-d) undergo acid-catalysed cyclodehydration to derivatives of the isoindolo-fused heterocyclic systems (6)-(10).Ring closures to the naphthalene 2- or 8-position are observed to occur with N-1-naphthylalkyl substituents, the latter proved by an X-ray crystal structure determination of 13b-phenyl-7H-benzisoindoloisoquinolin-9(13H)-one (9b).

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