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73721-91-2

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73721-91-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73721-91-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,7,2 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 73721-91:
(7*7)+(6*3)+(5*7)+(4*2)+(3*1)+(2*9)+(1*1)=132
132 % 10 = 2
So 73721-91-2 is a valid CAS Registry Number.

73721-91-2Upstream product

73721-91-2Downstream Products

73721-91-2Relevant articles and documents

Amine-boranes as Dual-Purpose Reagents for Direct Amidation of Carboxylic Acids

Choudhary, Shivani,Hamann, Henry J.,Ramachandran, P. Veeraraghavan

, (2020)

Amine-boranes serve as dual-purpose reagents for direct amidation, activating aliphatic and aromatic carboxylic acids and, subsequently, delivering amines to provide the corresponding amides in up to 99% yields. Delivery of gaseous or low-boiling amines as their borane complexes provides a major advantage over existing methodologies. Utilizing amine-boranes containing borane incompatible functionalities allows for the preparation of functionalized amides. An intermolecular mechanism proceeding through a triacyloxyborane-amine complex is proposed.

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