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4497-29-4

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4497-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4497-29-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,9 and 7 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4497-29:
(6*4)+(5*4)+(4*9)+(3*7)+(2*2)+(1*9)=114
114 % 10 = 4
So 4497-29-4 is a valid CAS Registry Number.

4497-29-4Relevant articles and documents

An expeditious and efficient bromomethylation of thiols: Enabling bromomethyl sulfides as useful building blocks

Silva-Cuevas, Carolina,Paleo, Ehecatl,León-Rayo, David F.,Lujan-Montelongo, J. Armando

, p. 24654 - 24659 (2018/07/25)

A facile and highly efficient method for the bromomethylation of thiols, using paraformaldehyde and HBr/AcOH, has been developed, which advantageously minimizes the generation of highly toxic byproducts. The preparation of 22 structurally diverse α-bromomethyl sulfides illustrates the chemo-tolerant applicability while bromo-lithium exchange and functionalization sequences, free radical reductions, and additions of the title compounds demonstrate their synthetic utility.

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