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40662-79-1

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40662-79-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40662-79-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,6 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40662-79:
(7*4)+(6*0)+(5*6)+(4*6)+(3*2)+(2*7)+(1*9)=111
111 % 10 = 1
So 40662-79-1 is a valid CAS Registry Number.

40662-79-1Relevant articles and documents

Synthesis of Ynolates via Double Deprotonation of Nonbrominated Esters

Sun, Jun,Yoshiiwa, Toshiya,Iwata, Takayuki,Shindo, Mitsuru

supporting information, p. 6585 - 6588 (2019/09/30)

Herein, we report a double deprotonation method used for the preparation of ynolates starting from nonbrominated 2,6-di-tert-butylphenyl esters. The current method is superior to the previously described double lithium/halogen exchange approach because easily accessible starting materials are used. This method will be especially useful for preparation of ynolates bearing functional groups in organic synthesis.

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