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139927-09-6

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139927-09-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139927-09-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,2 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139927-09:
(8*1)+(7*3)+(6*9)+(5*9)+(4*2)+(3*7)+(2*0)+(1*9)=166
166 % 10 = 6
So 139927-09-6 is a valid CAS Registry Number.

139927-09-6Relevant articles and documents

A Novel Skeletal Rearrangement of 2-Azabicyclohept-5-ene-3-carboxylic Acid Derivatives into 2-Oxabicyclo-oct-7-en-3-ones under Acidic Conditions

Kobayashi, Tomoshige,Ono, Katsuhiko,Kato, Hiroshi

, p. 61 - 65 (2007/10/02)

The reaction of ethyl 2-azabicyclohept-5-ene-3-carboxylate with aroyl chloride and the subsequent hydrolysis of the ester group provided 2-aroyl-2-azabicyclohept-5-ene-3-carboxylic acid derivatives, which underwent a stereospecific rearrange

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