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138023-47-9

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138023-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138023-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,2 and 3 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138023-47:
(8*1)+(7*3)+(6*8)+(5*0)+(4*2)+(3*3)+(2*4)+(1*7)=109
109 % 10 = 9
So 138023-47-9 is a valid CAS Registry Number.

138023-47-9Downstream Products

138023-47-9Relevant articles and documents

DIAZOBICYCLOALKANES WITH NITROGEN ATOM IN THE NODAL POSITIONS. 21. HETEROATOM-PROMOTED LITHIATION OF BENZO-1,4-DIAZABICYCLOOCTENE AND INTRODUCTION OF SUBSTITUENTS INTO THE ANNELATED BENZENE RING

Gall', A. A.,Trachum, A. S.,Romantsev, V. A.,Shishkin, G. V.

, p. 626 - 630 (2007/10/02)

The action of n-butyllithium on benzo-1,4-diazabicyclooctene leads to lithiation in the 3' position of the aromatic ring.The reaction of this lithium derivative with electrophilic reagents was used to synthesize 3'- and 3',6'-substituted derivatives of benzo-1,4-diazabicyclooctane.

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