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109703-91-5

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109703-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109703-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109703-91:
(8*1)+(7*0)+(6*9)+(5*7)+(4*0)+(3*3)+(2*9)+(1*1)=125
125 % 10 = 5
So 109703-91-5 is a valid CAS Registry Number.

109703-91-5Downstream Products

109703-91-5Relevant articles and documents

One-pot three-component synthesis of tetrasubstituted N - H pyrroles from secondary propargylic alcohols, 1,3-dicarbonyl compounds and tert-butyl carbamate

Cadierno, Victorio,Gimeno, Jose,Nebra, Noel

experimental part, p. 233 - 236 (2010/04/27)

(Chemical Equation Presented) Several tetrasubstituted N - H pyrroles, functionalized with ester or ketone groups at C-3 position, were prepared by one-pot coupling of secondary propargylic alcohols with 1,3-dicarbonyl compounds and tert-butyl carbamate,

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