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7666-51-5

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7666-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7666-51-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,6 and 6 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7666-51:
(6*7)+(5*6)+(4*6)+(3*6)+(2*5)+(1*1)=125
125 % 10 = 5
So 7666-51-5 is a valid CAS Registry Number.

7666-51-5Relevant articles and documents

Synthesis of 1,3-Disubstituted Diazolidines

Lambert, Joseph B.,Huseland, Dave E.,Wang, Gen-tai

, p. 657 - 658 (2007/10/02)

Symmetrical and unsymmetrical 1,3-diaminoethanes 1 are obtained by the reduction of N,N'-disubstituted oxamides 4 with lithium aluminum hydride.The oxamides 4 are readily produced by treatment of diethyl oxalate with primary amines.The 1,3-diaminoethanes 1 lead to 1,3-diazolidines 2 on treatment with formaldehyde.

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