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188410-91-5

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188410-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188410-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,4,1 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188410-91:
(8*1)+(7*8)+(6*8)+(5*4)+(4*1)+(3*0)+(2*9)+(1*1)=155
155 % 10 = 5
So 188410-91-5 is a valid CAS Registry Number.

188410-91-5Downstream Products

188410-91-5Relevant articles and documents

A New α-Iodination of Ketones Using Iodine-Ammonium Cerium(IV) Nitrate in Alcohol or Acetic Acid

Horiuchi, C. Akira,Kiji, Shinji

, p. 421 - 426 (2007/10/03)

The direct α-iodination of various ketones using iodine-ammonium cerium(IV) nitrate in acetic acid or alcohol gave the corresponding α-iodo ketones in high yields. The effect of cerium salt on the iodination of ketones, and the iodination of 5α-cholestan-3-one using several methods are also discussed. In the reaction of 3,3,5-trimethylcyclohexanone and unsymmetrical ketones, such as 2-hexanone and 2-heptanone, using methanol, ethanol, 1-propanol, and 2-propanol, the regioselective iodination product was obtained. In the case of bromination, the reaction of ketones with bromine and ammonium cerium(IV) nitrate also yielded the corresponding α-bromo ketones.

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