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189100-27-4

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189100-27-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189100-27-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,1,0 and 0 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 189100-27:
(8*1)+(7*8)+(6*9)+(5*1)+(4*0)+(3*0)+(2*2)+(1*7)=134
134 % 10 = 4
So 189100-27-4 is a valid CAS Registry Number.

189100-27-4Relevant articles and documents

Palladium-catalyzed couplings of heteroaryl amines with aryl halides using sodium phenolate as the stoichiometric base

Schulte II, James P.,Tweedie, Scott R.

, p. 2331 - 2336 (2007)

Heteroaryl amines are efficiently coupled (in two hours) to aryl halides with catalytic Pd2(dba)3 and Xantphos to provide the corresponding biaryl amines under microwave and standard thermal conditions. The use of organic-soluble sodium phenolate (NaOPh) as the stoichiometric base promotes facile coupling of a variety of substrates in excellent yields. Georg Thieme Verlag Stuttgart.

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