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166670-25-3

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166670-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 166670-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,6,7 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 166670-25:
(8*1)+(7*6)+(6*6)+(5*6)+(4*7)+(3*0)+(2*2)+(1*5)=153
153 % 10 = 3
So 166670-25-3 is a valid CAS Registry Number.

166670-25-3Relevant articles and documents

A concise route to biaryls: Formal synthesis of biaryl diamino diacid (AB segment) of vancomycin

Rao,Reddy,Reddy

, p. 5039 - 5042 (1994)

An efficient approach to the AB segment of vancomycin involving triphenylphosphine-catalysed coupling of the substituted aryl lithio compound (13) with palladium complex (14) of aromatic Schiff base derived from 3,5- dimethoxybenzaldehyde is described.

Base-catalyzed synthesis of amides and imines via C-C and CC bond cleavage

Yadav, Dilip Kumar T.,Bhanage, Bhalchandra M.

, p. 12387 - 12391 (2015/02/19)

A transition metal free base catalyzed approach for C-N bond formation via C-C and CC bond activation has been developed. The N-arylureas reacted smoothly with 1,3-dicarbonyls and α,β-unsaturated ketones to furnish the corresponding amides and imines respectively in moderate to excellent yields.

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