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2033-49-0

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2033-49-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2033-49-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,0,3 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2033-49:
(6*2)+(5*0)+(4*3)+(3*3)+(2*4)+(1*9)=50
50 % 10 = 0
So 2033-49-0 is a valid CAS Registry Number.

2033-49-0Relevant articles and documents

Novel α-Iodination of Ketones Using Iodine/Copper(II) Acetate

Horiuchi, Charles A.,Satoh, James Y.

, p. 312 - 314 (1981)

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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.

Synthesis of α-Iodo Ketones

Sha, Chin-Kang,Young, Jenn-Jong,Jean, Tsong-shin

, p. 3919 - 3920 (2007/10/02)

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