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17721-16-3

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17721-16-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17721-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,2 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17721-16:
(7*1)+(6*7)+(5*7)+(4*2)+(3*1)+(2*1)+(1*6)=103
103 % 10 = 3
So 17721-16-3 is a valid CAS Registry Number.

17721-16-3Relevant articles and documents

Tert-Butoxide-Mediated Arylation of 2-Substituted Cyanoacetates with Diaryliodonium Salts

Qian, Xiaofei,Han, Jianwei,Wang, Limin

, p. 940 - 946 (2016/04/05)

A transition metal-free direct arylation of 2-substituted cyanoacetates with diaryliodonium salts was developed. With this approach, a wide range of α-tolunitrile derivatives has been synthesized in good to excellent yields of 45-92%. Furthermore, the practicability of this approach is further manifested in the synthesis of a related bioactive agent of glutarimide.

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