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191990-87-1

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191990-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191990-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,9 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 191990-87:
(8*1)+(7*9)+(6*1)+(5*9)+(4*9)+(3*0)+(2*8)+(1*7)=181
181 % 10 = 1
So 191990-87-1 is a valid CAS Registry Number.

191990-87-1Relevant academic research and scientific papers

Synthesis and structures of new C2-symmetrical chiral macrocycles containing the ephedrine moiety

Chen, Yiwen,Gao, Mingzhang,Tan, Songde,Reibenspies, Joseph H.,Zingaro, Ralph A.

experimental part, p. 891 - 897 (2009/09/29)

Three kinds of novel C2-symmetrical chiral macrocyclic compounds containing an ephedrine moiety have been designed and synthesized; two of their crystal structures have been determined.

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