637331-46-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637331-46-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,3 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 637331-46:
(8*6)+(7*3)+(6*7)+(5*3)+(4*3)+(3*1)+(2*4)+(1*6)=155
155 % 10 = 5
So 637331-46-5 is a valid CAS Registry Number.
637331-46-5Relevant academic research and scientific papers
Diels-Alder reaction of 2-nitro glycals: A new route to the synthesis of benzopyrans
Pachamuthu, Kandasamy,Schmidt, Richard R.
, p. 1355 - 1357 (2007/10/03)
Synthesis of different benzopyrans was achieved by Diels-Alder reaction of 2-nitro glycals with Danishefky's diene, hydrolysis of the enol ether moiety, and subsequent elimination of the nitro and methoxy group.
