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904911-48-4

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904911-48-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 904911-48-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,9,1 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 904911-48:
(8*9)+(7*0)+(6*4)+(5*9)+(4*1)+(3*1)+(2*4)+(1*8)=164
164 % 10 = 4
So 904911-48-4 is a valid CAS Registry Number.

904911-48-4Relevant articles and documents

Synthesis and characterization of two isomers of 14π-electron germaaromatics: Kinetically stabilized 9-germaanthracene and 9-germaphenanthrene

Sasamori, Takahiro,Inamura, Koji,Hoshino, Wataru,Nakata, Norio,Mizuhata, Yoshiyuki,Watanabe, Yasuaki,Furukawa, Yukio,Tokitoh, Norihiro

, p. 3533 - 3536 (2008/10/09)

The first stable 9-germaanthracene and 9-germaphenanthrene were successfully synthesized by taking advantage of kinetic stabilization utilizing effective steric protection groups, Tbt and Bbt groups (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl, Bbt = 2,6-bis[bis(trimethylsilyl)methylJ4-[tris(trimethylsilyl)methyl]phenyl). The similarities and differences of the structures and properties between the two isomers of germaaromatics are discussed.

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