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187845-78-9

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187845-78-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187845-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,8,4 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 187845-78:
(8*1)+(7*8)+(6*7)+(5*8)+(4*4)+(3*5)+(2*7)+(1*8)=199
199 % 10 = 9
So 187845-78-9 is a valid CAS Registry Number.

187845-78-9Relevant articles and documents

Microwave-assisted cross-coupling for the construction of diaryl sulfides

Tan, Chen-Ming,Chen, Grace Shiahuy,Chena, Chien-Shu,Chern, Ji-Wang

, p. 94 - 100 (2011)

The construction of diaryl sulfides through the cross-coupling of aryl iodides and thiols in microwave heating is described. By using this method, a variety of diaryl sulfides can be prepared in a mild condition and in high yields. Deactivated 4-nitrothiophenol was effective to afford the product in 94% yield. Sterically hindered ortho-substituted aryl iodides or thiophenols provided diaryl sulfides effectively by this microwave-assisted coupling reaction.

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