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402757-92-0

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402757-92-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 402757-92-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,7,5 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 402757-92:
(8*4)+(7*0)+(6*2)+(5*7)+(4*5)+(3*7)+(2*9)+(1*2)=140
140 % 10 = 0
So 402757-92-0 is a valid CAS Registry Number.

402757-92-0Downstream Products

402757-92-0Relevant articles and documents

Synthesis of chromeno[2,3-d]imidazol-9(1 H)-ones via tandem reactions of 3-iodochromones with amidines involving copper-catalyzed C-H functionalization and C-O bond formation

Sheng, Jia,Chao, Bo,Chen, Hong,Hu, Youhong

, p. 4508 - 4511 (2013/09/24)

A novel six-membered heterocyclic skeleton of imidazochromone was prepared via an efficient one-pot reaction including a key step of copper-catalyzed aerobic C-H intramolecular cycloetherification. Notably, this process does not require the presence of st

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