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75817-18-4

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75817-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75817-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,8,1 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 75817-18:
(7*7)+(6*5)+(5*8)+(4*1)+(3*7)+(2*1)+(1*8)=154
154 % 10 = 4
So 75817-18-4 is a valid CAS Registry Number.

75817-18-4Downstream Products

75817-18-4Relevant articles and documents

RING-CHAIN TAUTOMERISM OF IMIDAZOLIDINE SYSTEM

Witek, Stanislaw,Bielawska, Alicja,Bielawski, Jacek

, p. 1313 - 1317 (2007/10/02)

The existance of the tautomeric equilibrium of imidazolidine system 34has been established.Due to a higher reactivity of NH group in 4, the reaction of the system 34 with PhNCO unbalances the tautomeric equilibrium, and causes an increase in the content of the open-chain urea derivative 6 in the reaction mixture.The use of isocyanates or other similar reagents, e.g., isothiocyanates, seems to be a convenient method for studies of the tautomerism in similar system.

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