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1158997-06-8

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1158997-06-8

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1158997-06-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1158997-06-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,8,9,9 and 7 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1158997-06:
(9*1)+(8*1)+(7*5)+(6*8)+(5*9)+(4*9)+(3*7)+(2*0)+(1*6)=208
208 % 10 = 8
So 1158997-06-8 is a valid CAS Registry Number.

1158997-06-8Relevant articles and documents

A one-pot synthesis of 3-arylglutaric anhydrides by reaction of ketene with aromatic aldehydes and ketones

Matsunaga, Hirokazu,Ikeda, Kiyoshi,Iwamoto, Ken-ichi,Suzuki, Yumiko,Sato, Masayuki

body text, p. 2334 - 2336 (2009/09/06)

Aromatic aldehydes and ketones react with ketene under Lewis acid catalysis to produce β-lactones, which in situ react with another molecule of ketene to produce 3-arylglutaric anhydrides. The mechanism, scope, and limitation of this one-pot synthesis of 3-substituted glutaric anhydrides are discussed.

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