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1399639-06-5

1399639-06-5

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1399639-06-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1399639-06-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,9,6,3 and 9 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1399639-06:
(9*1)+(8*3)+(7*9)+(6*9)+(5*6)+(4*3)+(3*9)+(2*0)+(1*6)=225
225 % 10 = 5
So 1399639-06-5 is a valid CAS Registry Number.

1399639-06-5Downstream Products

1399639-06-5Relevant articles and documents

Synthesis of the tetracyclic core (ABCE rings) of daphenylline

Fang, Bowen,Zheng, Huaiji,Zhao, Changgui,Jing, Peng,Li, Huilin,Xie, Xingang,She, Xuegong

, p. 8367 - 8373,7 (2020/10/15)

A concise synthesis of the tetracyclic core (ABCE rings) of daphenylline has been accomplished involving a benzobicyclo[3.3.1] lactam as the key intermediate. This bridged bicyclic intermediate was efficiently constructed via a Bronsted acid promoted intramolecular Friedel-Crafts type Michael addition of a δ-benzyl α,β-unsaturated δ-lactam.

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