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99876-44-5

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99876-44-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99876-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,7 and 6 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99876-44:
(7*9)+(6*9)+(5*8)+(4*7)+(3*6)+(2*4)+(1*4)=215
215 % 10 = 5
So 99876-44-5 is a valid CAS Registry Number.

99876-44-5Relevant articles and documents

Structure and Reactivity of Highly Twisted N-Acylimidazoles

Stone, Elizabeth A.,Mercado, Brandon Q.,Miller, Scott J.

, p. 2346 - 2351 (2019)

A modular and efficient synthesis of highly twisted N-acylimidazoles is reported. These twist amides were characterized via X-ray crystallography, NMR spectroscopy, IR spectroscopy, and DFT calculations. Modification of the substituent proximal to the amide revealed a maximum torsional angle of 88.6° in the solid state, which may be the most twisted amide reported for a nonbicyclic system to date. Reactivity and stability studies indicate that these twisted N-acylimidazoles may be valuable, namely as acyl transfer reagents.

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