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121618-91-5

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121618-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121618-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121618-91:
(8*1)+(7*2)+(6*1)+(5*6)+(4*1)+(3*8)+(2*9)+(1*1)=105
105 % 10 = 5
So 121618-91-5 is a valid CAS Registry Number.

121618-91-5Relevant articles and documents

The Xanthene-9-spiro-4'-piperidine Nucleus as a Probe for Opiate Activity

Galt, Ronald H. B.,Horbury, John,Matusiak, Zbigniew S.,Pearce, Robert J.,Shaw, John S.

, p. 2357 - 2362 (2007/10/02)

A series of novel 1'-methylxanthene-9-sspiro-4'-piperidines has been prepared in the search for opiate analgesics with improved pharmacological properties.It has been found that intriduction of a hydroxyl group into the 4-position of the xanthenespiropipe

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