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72181-94-3

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72181-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72181-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,8 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 72181-94:
(7*7)+(6*2)+(5*1)+(4*8)+(3*1)+(2*9)+(1*4)=123
123 % 10 = 3
So 72181-94-3 is a valid CAS Registry Number.

72181-94-3Upstream product

72181-94-3Downstream Products

72181-94-3Relevant articles and documents

Oxidative bromination of ketones using ammonium bromide and oxone

MacHarla, Arun Kumar,Chozhiyath Nappunni, Rohitha,Marri, Mahender Reddy,Peraka, Swamy,Nama, Narender

scheme or table, p. 191 - 195 (2012/01/17)

A highly efficient, environmentally safe and economic method for selective α-monobromination of aralkyl, cyclic, acyclic, 1,3-diketones and β-keto esters and α,α-dibromination of 1,3-diketones and β-keto esters without catalyst is reported using ammonium bromide as a bromine source and oxone as an oxidant. The reaction proceeds at ambient temperature and yields range from moderate to excellent. Bromination of unsymmetrical ketones takes place at the less substituted α-position predominantly. Aromatisation of tetralones is also carried out with this reagent system.

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