Cas 802008-04-4,C<sub>12</sub>H<sub>17</sub>NO

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Check Digit Verification of cas no

The CAS Registry Mumber 802008-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,2,0,0 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 802008-04:
(8*8)+(7*0)+(6*2)+(5*0)+(4*0)+(3*8)+(2*0)+(1*4)=104
104 % 10 = 4
So 802008-04-4 is a valid CAS Registry Number.

802008-04-4Upstream product

802008-04-4Downstream Products

1399639-00-9 C₁₉H₁₈N₂O₆S

802008-04-4Relevant academic research and scientific papers

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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