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40576-90-7

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40576-90-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40576-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,5,7 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40576-90:
(7*4)+(6*0)+(5*5)+(4*7)+(3*6)+(2*9)+(1*0)=117
117 % 10 = 7
So 40576-90-7 is a valid CAS Registry Number.

40576-90-7Relevant articles and documents

A Rearrangement of S-Substituted Cyclohexanone Thioximes

Andreae, Siegfried,Schmitz, Ernst,Schulz, Burkhard

, p. 175 - 182 (2007/10/02)

Mercaptoheterocycles like 2-mercaptobenzazoles 5, 2-mercaptouracils 10, and ketene S,S-acetals 18 are aminated by 1-oxa-2-azaspirooctane (1).The intermediate cyclohexanone thioximes, which can be isolated in some cases (6a-c, 11), undergo a 1,3-shift of the mercapto fragment from the nitrogen to the carbon atom followed by cyclization and/or hydrolysis.Thus, new heterocyclic systems as 14-17 or 19 can be created. - Key Words: Aminations / 1-Oxa-2-azaspirooctane / Thioximes / Benzazoles / 2-Thiouraciles

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