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1231753-24-4

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1231753-24-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1231753-24-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,7,5 and 3 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1231753-24:
(9*1)+(8*2)+(7*3)+(6*1)+(5*7)+(4*5)+(3*3)+(2*2)+(1*4)=124
124 % 10 = 4
So 1231753-24-4 is a valid CAS Registry Number.

1231753-24-4Upstream product

1231753-24-4Downstream Products

1231753-24-4Relevant articles and documents

Gold-catalyzed one-step practical synthesis of oxetan-3-ones from readily available propargylic alcohols

Ye, Longwu,He, Weimin,Zhang, Liming

supporting information; experimental part, p. 8550 - 8551 (2010/08/06)

A general solution for the synthesis of various oxetan-3-ones is developed. This reaction uses readily available propargylic alcohols as substrates and proceeds without the exclusion of moisture or air ("open flask"). Notably, oxetan-3-one, a highly valuable substrate for drug discovery, can be prepared in one step from propargyl alcohol in a fairly good yield. The facile formation of the strained oxetane ring provides strong support for the intermediacy of α-oxo gold carbenes. This safe and efficient generation of gold carbenes via intermolecular alkyne oxidation offers a potentially general entry into α-oxo metal carbene chemistry without using hazardous diazo ketones.

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