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19762-20-0

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19762-20-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19762-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,6 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19762-20:
(7*1)+(6*9)+(5*7)+(4*6)+(3*2)+(2*2)+(1*0)=130
130 % 10 = 0
So 19762-20-0 is a valid CAS Registry Number.

19762-20-0Downstream Products

19762-20-0Relevant articles and documents

Efficient copper(II) acetate catalyzed homo- and heterocoupling of terminal alkynes at ambient conditions

Balaraman, Kaluvu,Kesavan, Venkitasamy

experimental part, p. 3461 - 3466 (2010/11/21)

Symmetrical 1,3-diynes were obtained in quantitative yields using the copper(II) acetate catalyzed homocoupling of terminal alkynes in the presence of a stoichiometric amount of piperidine at 25 °C under aerobic conditions. We also accomplished facile syntheses of unsymmetric 1,3-diynes by heterocoupling terminal alkynes in very good yields under the reported reaction conditions. Georg Thieme Verlag Stuttgart.

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