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162130-64-5

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162130-64-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 162130-64-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,2,1,3 and 0 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 162130-64:
(8*1)+(7*6)+(6*2)+(5*1)+(4*3)+(3*0)+(2*6)+(1*4)=95
95 % 10 = 5
So 162130-64-5 is a valid CAS Registry Number.

162130-64-5Relevant articles and documents

Pyrazole Derivatlves Part III Synthesis of Novel Naphthopyrazolebenzenesulfonylureas, Thioureas Derivatives and Their Cyclized Derivatives

Faidallah, Hassan M.,Makki, Mohamad S. I.

, p. 585 - 590 (2007/10/03)

Substituted p-(naphthopyrazol-2-yl)benzenesulfonylurea and thiourea derivatives 5-7 were prepared in three series.Cyclization of the thioureido group of compounds 7 by treating with ethyl bromoacetate, ethyl β-bromopropionate and α-bromoacetophenone afforded the corresponding thiazolidinone, thiazinone and thiazoline derivatives 8, 9 and 10 respectively. - Key Words Naphthopyrazoles; Benzenesulfonylureas; Benzenesulfonylthioureas.

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