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35717-22-7

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35717-22-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 35717-22-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,5,7,1 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 35717-22:
(7*3)+(6*5)+(5*7)+(4*1)+(3*7)+(2*2)+(1*2)=117
117 % 10 = 7
So 35717-22-7 is a valid CAS Registry Number.

35717-22-7Relevant articles and documents

Synthesis of unsymmetrical 2,3-diaryl- and 2,4-diarylthiophenes starting from 2,5-dichlorothiophene

Sone,Sato,Umetsu,Yoshino,Takahashi

, p. 2187 - 2194 (2007/10/02)

Unsymmetrically substituted 2,4-diaryl- and 2,3-diarylthiophenes were synthesized from 2,5-dichlorothiophene via 4-aryl-2-chlorothiophenes in two and four steps including Ni-mediated cross-coupling, respectively. Aluminum chloride-catalyzed reaction of 3-aryl-2-chlorothiophenes with some aromatic ethers unexpectedly led to the formation of the corresponding 2,4-isomers.

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