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1033931-97-3

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1033931-97-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1033931-97-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,3,9,3 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1033931-97:
(9*1)+(8*0)+(7*3)+(6*3)+(5*9)+(4*3)+(3*1)+(2*9)+(1*7)=133
133 % 10 = 3
So 1033931-97-3 is a valid CAS Registry Number.

1033931-97-3Relevant articles and documents

A domino annulation reaction under Willgerodt-Kindler conditions

Kadzimirsz, Daniel,Kramer, Daniel,Sripanom, Lertnarong,Oppel, Iris M.,Rodziewicz, Pawel,Doltsinis, Nikos L.,Dyker, Gerald

, p. 4644 - 4649 (2008/09/21)

(Chemical Equation Presented) Butanone side chains at arenes and hetarenes, efficiently introduced by a Heck-type reaction, are transformed to annulated thieno[3,2-b]thiophenes in a domino redox process under Willgerodt-Kindler conditions. A nucleophilic aromatic substitution with an intermediary thioenolate is a reasonable key step of this process.

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