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1550554-28-3

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1550554-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1550554-28-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,5,0,5,5 and 4 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1550554-28:
(9*1)+(8*5)+(7*5)+(6*0)+(5*5)+(4*5)+(3*4)+(2*2)+(1*8)=153
153 % 10 = 3
So 1550554-28-3 is a valid CAS Registry Number.

1550554-28-3Relevant articles and documents

Preparation of 2-aminopyridoimidazoles and 2-aminobenzimidazoles via phosphorus oxychloride-mediated cyclization of aminoureas

Deasy, Rebecca E.,Slattery, Catherine N.,Maguire, Anita R.,Kjell, Douglas P.,Hawk, Mai Khanh N.,Joo, Jung Min,Gu, Rui Lin,Moynihan, Humphrey

, p. 3688 - 3695 (2014/05/06)

The novel preparation of 2-aminopyridoimidazoles and 2-aminobenzimidazoles via the cyclization of (2-aminopyridin-3-yl)urea and (2-aminophenyl)urea substrates in the presence of phosphorus oxychloride is described. This methodology is demonstrated for a range of urea substrates with aminoimidazole products obtained in good yields and with excellent levels of purity.

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