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1609137-38-3

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1609137-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1609137-38-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,1,3 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1609137-38:
(9*1)+(8*6)+(7*0)+(6*9)+(5*1)+(4*3)+(3*7)+(2*3)+(1*8)=163
163 % 10 = 3
So 1609137-38-3 is a valid CAS Registry Number.

1609137-38-3Relevant articles and documents

Rotaxanes synthesized through sodium-ion-templated clipping of macrocycles around nonconjugated amide and urea functionalities

Ho, Tsung-Hsien,Lai, Chien-Chen,Liu, Yi-Hung,Peng, Shie-Ming,Chiu, Sheng-Hsien

, p. 4563 - 4567 (2014/05/06)

A single urea or amide functionality in a dumbbell-shaped guest can be clipped by a macrocycle generated from a diamine and a dialdehyde through the templating effect of a Na+ ion (see scheme). The resulting imine-containing rotaxanes can then be reduced to allow isolation of stable amine-based rotaxanes. A single urea or amide functionality in a dumbbell-shaped guest can be clipped by a macrocycle generated from a diamine and a dialdehyde through the templating effect of a Na+ ion (see scheme). The resulting imine-containing rotaxanes can then be reduced to allow isolation of stable amine-based rotaxanes.

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