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1613377-19-7

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1613377-19-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1613377-19-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,3,3,7 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1613377-19:
(9*1)+(8*6)+(7*1)+(6*3)+(5*3)+(4*7)+(3*7)+(2*1)+(1*9)=157
157 % 10 = 7
So 1613377-19-7 is a valid CAS Registry Number.

1613377-19-7Relevant articles and documents

Total synthesis of (+)-cylindradine A

Iwata, Makoto,Kanoh, Kyohei,Imaoka, Takuya,Nagasawa, Kazuo

supporting information, p. 6991 - 6994 (2014/06/23)

Cylindradines A and B, members of the polycyclic pyrrole-imidazole alkaloids (PIAs), are the only congeners bearing a 3-carbamoylpyrrole unit among the PIAs. In this communication, we described a total synthesis of (+)-cylindradine A based on intramolecular Friedel-Crafts type cyclization of pyrrole-aldehyde and oxidative cyclization of tricyclic pyrrolopyrrolidine- guanidine with hypervalent iodine to construct the cyclic guanidine structure including the N,N′-aminal moiety. the Partner Organisations 2014.

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