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1372104-66-9

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1372104-66-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1372104-66-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,2,1,0 and 4 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1372104-66:
(9*1)+(8*3)+(7*7)+(6*2)+(5*1)+(4*0)+(3*4)+(2*6)+(1*6)=129
129 % 10 = 9
So 1372104-66-9 is a valid CAS Registry Number.

1372104-66-9Relevant academic research and scientific papers

Three-step synthesis of (thio)xanthene and dibenzothiepine/dibenzoxepine by an intramolecular Mizoroki-Heck reaction of diaryl (thio)ethers

Jepsen, Tue Heesgaard,Larsen, Mogens,J?rgensen, Morten,Nielsen, Mogens Br?ndsted

, p. 418 - 422 (2012/03/11)

We present a novel three-step protocol for preparing xanthene/thioxanthene and dibenzothiepine/dibenzoxepine from readily available starting materials. The Mizoroki-Heck cyclization as the final step was optimized to afford full conversion of the corresponding diaryl (thio)ethers and furthermore to achieve reasonably good selectivity between the 6-exo and the 7-endo products. Georg Thieme Verlag Stuttgart · New York.

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