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262603-71-4

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262603-71-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 262603-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,2,6,0 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 262603-71:
(8*2)+(7*6)+(6*2)+(5*6)+(4*0)+(3*3)+(2*7)+(1*1)=124
124 % 10 = 4
So 262603-71-4 is a valid CAS Registry Number.

262603-71-4Relevant articles and documents

Customized, core-modified corroles from [2+2] condensation of dipyrromethanes

Cho, Won-Seob,Lee, Chang-Hee

, p. 697 - 701 (2007/10/03)

Corroles and core-modified corroles were synthesized by acid-catalyzed condensation under low-scrambling conditions. The synthesis utilized [2+2] condensation of two different dipyrromethanes. The condensation afforded different corroles bearing heteroatoms in a predesignated location depending on the starting dipyrromethanes. Selective α-α' linkage was achieved by positioning a linking carbon unit at a different site of dipyrromethanes. (C) 2000 Elsevier Science Ltd.

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