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154374-54-6

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154374-54-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 154374-54-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,3,7 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 154374-54:
(8*1)+(7*5)+(6*4)+(5*3)+(4*7)+(3*4)+(2*5)+(1*4)=136
136 % 10 = 6
So 154374-54-6 is a valid CAS Registry Number.

154374-54-6Relevant articles and documents

In situ slow release of isocyanates: Synthesis and organocatalytic application of N-acylureas

Singh, Atul K.,Chawla, Ruchi,Yadav, Lal Dhar S.

, p. 5099 - 5102 (2013/09/02)

A novel, efficient, and operationally simple one-pot synthesis of both, symmetrical and unsymmetrical N-acylureas from carboxamides and in situ generated isocyanates (from N,N-dibromo-p-toluenesulfonamide) in the presence of a mild base at rt is reported. The protocol avoids the tedious isolation and purification steps of hazardous isocyanates. The first application of these acylureas to the catalysis through hydrogen bonding is also demonstrated.

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