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258500-81-1

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258500-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 258500-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,5,0 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 258500-81:
(8*2)+(7*5)+(6*8)+(5*5)+(4*0)+(3*0)+(2*8)+(1*1)=141
141 % 10 = 1
So 258500-81-1 is a valid CAS Registry Number.

258500-81-1Relevant articles and documents

Preparation of 2,3-dihydro-1H-spiro[isoquinoline-4,4′-piperidine] via an N-sulfonyl Pictet-Spengler reaction

Liu, Jian,Jian, Tianying,Sebhat, Iyassu,Nargund, Ravi

, p. 5115 - 5117 (2007/10/03)

A high yielding synthesis of variously substituted 2,3-dihydro-1H-spiro[isoquinoline-4,4′-piperidine] is reported. N-(2-nitrophenyl)sulfonyl was successfully used as both an activating and protecting group for the key Pictet-Spengler reaction.

PIPERIDINE AMINE COMPOUNDS AND THEIR USE

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Page 11, (2010/02/07)

Compounds having the formula[Chemical formula should be inserted here. Please see paper copy] wherein R1, R2, R3, R6, R7 and Ar are as defined in the specification, in vivo-hydrolysable precursors the

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