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4596-45-6

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4596-45-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4596-45-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,9 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4596-45:
(6*4)+(5*5)+(4*9)+(3*6)+(2*4)+(1*5)=116
116 % 10 = 6
So 4596-45-6 is a valid CAS Registry Number.

4596-45-6Relevant articles and documents

A mild and efficient method for the preparation of acyl azides from carboxylic acids using triphosgene

Gumaste,Bhawal,Deshmukh

, p. 1345 - 1346 (2002)

An efficient use of triphosgene for the preparation of various acyl azides from carboxylic acids and sodium azide is described.

FeCl36H2O-Catalyzed acceleration of the acylation of sodium azide with n-acylbenzotriazoles

Zhong, Zhiyun,Hu, Jieling,Wang, Xiaoxia,Liu, Junhua,Zhang, Longfeng

experimental part, p. 2461 - 2467 (2011/08/05)

Catalyzed by ferric chloride hexahydrate (FeCl36H2O), the acylation of sodium azide with N-acylbenzotriazoles was greatly accelerated in a mixed solvent of acetone and water. Thus, good to excellent yields of a variety of acyl azides were obtained at room temperature in a short time. Furthermore, because of the complete conversion of N-acylbenzotriazoles and the easy removal of the by-product, purification by column chromatography was no longer required, which made the protocol suitable for large-scale preparation.

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