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137266-99-0

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137266-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137266-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,6 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137266-99:
(8*1)+(7*3)+(6*7)+(5*2)+(4*6)+(3*6)+(2*9)+(1*9)=150
150 % 10 = 0
So 137266-99-0 is a valid CAS Registry Number.

137266-99-0Downstream Products

137266-99-0Relevant articles and documents

A novel rearrangement reaction conversion of 3-(chloromethyl)azetidin-2-ones to azetidine-3-carboxylic acid esters

Bartholomew,Stocks

, p. 4795 - 4798 (2007/10/02)

Transformation of 3-(chloromethyl)azetidin-2-ones to azetidine-3-carboxylic acid esters is described. The readily available 3-(chloromethyl)azetidin-2-ones rearranged in good yields to azetidine-3-carboxylic acid esters on treatment with alkoxides. An alternative ring opening - ring closure procedure is also identified.

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