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132911-20-7

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132911-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 132911-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,9,1 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 132911-20:
(8*1)+(7*3)+(6*2)+(5*9)+(4*1)+(3*1)+(2*2)+(1*0)=97
97 % 10 = 7
So 132911-20-7 is a valid CAS Registry Number.

132911-20-7Relevant articles and documents

Organic Azides in Heterocyclic Synthesis, 12. Thermal Cyclization of 4-Azido-3-formyl-2-quinolones to Isoxazoloquinolones

Roschger, Peter,Stadlbauer, Wolfgang

, p. 401 - 403 (2007/10/02)

Thermolysis of the 4-azido-3-formyl-2-quinolone 6, which was prepared from the 4-hydroxy-2-quinolone 1, afforded the ring-closed isoxazoloquinolone 7. 3-(Arylaminomethylene)-2,4-quinolinediones 2 could not be transformed into an azide precursor in order t

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