164083-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164083-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,0,8 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 164083-68:
(8*1)+(7*6)+(6*4)+(5*0)+(4*8)+(3*3)+(2*6)+(1*8)=135
135 % 10 = 5
So 164083-68-5 is a valid CAS Registry Number.
164083-68-5Relevant articles and documents
Mild microwave-assisted synthesis of dipyrromethanes and their analogues
Xiong, Ruisheng,Borbas, K. Eszter
supporting information, p. 484 - 488 (2015/04/14)
The Mannich reaction between pyrroles or indoles and Eschenmoser's salt (dimethylmethylideneammonium iodide) forms N,N-dimethylamino-methylated derivatives in good to excellent yields. The reaction is highly regioselective, and for pyrroles both 2-and 3-s
