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1552-18-7

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1552-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1552-18-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,5 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1552-18:
(6*1)+(5*5)+(4*5)+(3*2)+(2*1)+(1*8)=67
67 % 10 = 7
So 1552-18-7 is a valid CAS Registry Number.

1552-18-7Relevant articles and documents

FeF3/i2-catalyzed synthesis of 4-chalcogen- substituted arylamines by direct thiolation of an arene C-H bond

Fang, Xiao-Li,Tang, Ri-Yuan,Zhang, Xing-Guo,Li, Jin-Heng

experimental part, p. 1099 - 1105 (2011/05/14)

An efficient regioselective synthesis of 4-chalcogen-substituted-arylamines by FeF3-catalyzed sulfenylation and selenation of arylamines has been developed. In the presence of FeF3and I2, a variety of arylamines underwent the reaction with disulfides or diselenides to afford the corresponding 4-sulfenyl-or 4-selenenyl-arylamines in moderate to good yields. Georg Thieme Verlag Stuttgart.

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