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1218811-72-3

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1218811-72-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1218811-72-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,8,8,1 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1218811-72:
(9*1)+(8*2)+(7*1)+(6*8)+(5*8)+(4*1)+(3*1)+(2*7)+(1*2)=143
143 % 10 = 3
So 1218811-72-3 is a valid CAS Registry Number.

1218811-72-3Downstream Products

1218811-72-3Relevant articles and documents

Room-temperature direct alkynylation of arenes with copper acetylides

Theunissen, Cdric,Evano, Gwilherm

supporting information, p. 4488 - 4491 (2015/01/09)

C-H bond in azoles and polyhalogenated arenes can be smoothly activated by copper acetylides to give the corresponding alkynylated (hetero)arenes by simple reaction at room temperature in the presence of phenanthroline and lithium tert-butoxide under an oxygen atmosphere. These stable, unreactive, and readily available polymers act as especially efficient and practical reagents for the introduction of an alkyne group to a wide number of arenes under remarkably mild conditions.

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