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1503991-64-7

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1503991-64-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1503991-64-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,0,3,9,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1503991-64:
(9*1)+(8*5)+(7*0)+(6*3)+(5*9)+(4*9)+(3*1)+(2*6)+(1*4)=167
167 % 10 = 7
So 1503991-64-7 is a valid CAS Registry Number.

1503991-64-7Relevant articles and documents

Copper-Catalyzed Cascade Synthesis of [1,2,4]-Triazoloquinazolinones

Lou, Zhenbang,Man, Ningning,Yang, Haijun,Zhu, Changjin,Fu, Hua

supporting information, p. 1395 - 1399 (2018/05/03)

An efficient and practical method for the synthesis of 1,2,4-triazolo[5,1- b ]quinazolin-9(3 H)-ones has been developed via the copper-catalyzed domino reactions of readily available substituted N ′-acetyl-2-bromobenzohydrazides with cyanamide. The protocol uses inexpensive CuI as the catalyst, and no other ligand or additive was required. The target products were prepared in good to excellent yields with tolerance of various functional groups.

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