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123418-76-8

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123418-76-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123418-76-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,1 and 8 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 123418-76:
(8*1)+(7*2)+(6*3)+(5*4)+(4*1)+(3*8)+(2*7)+(1*6)=108
108 % 10 = 8
So 123418-76-8 is a valid CAS Registry Number.

123418-76-8Downstream Products

123418-76-8Relevant articles and documents

Herbicidal Thienylureas, I

Stanetty, Peter,Puschautz, Erhard,Friedbacher, Gernot

, p. 53 - 63 (1989)

Syntheses of the title substances as potential herbicides are described by a modified Curtius degradation of corresponding thiophene carboxylic acids, obtained in turn by haloform reaction of appropriate acetyl thiophenes.Regioselective substitution reactions of thiophenes were key steps for the construction of desired substitution patterns.Structure-activity considerations show that especially the 3-thienyl ureas 36 and 38 exhibit significant herbicidal activity comparable with commercial products. - Keywords: Curtius degradation; Herbicides; Thiophenes; Ureas; Urethanes

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