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496801-18-4

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496801-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 496801-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,6,8,0 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 496801-18:
(8*4)+(7*9)+(6*6)+(5*8)+(4*0)+(3*1)+(2*1)+(1*8)=184
184 % 10 = 4
So 496801-18-4 is a valid CAS Registry Number.

496801-18-4Downstream Products

496801-18-4Relevant articles and documents

Synthesis and crystal structures of 2,3,12,13-tetraalkoxy-21,23- dithiaporphyrins and 2,3-dialkoxy-21-monothiaporphyrins

Agarwal, Neeraj,Hung,Ravikanth, Mangalampalli

, p. 10671 - 10680 (2007/10/03)

The tetraalkoxy and dialkoxy substituted 21,23-dithiaporphyrins and 21-monothiaporphyrins, respectively, having methoxy, butoxy, octyloxy and dodecyloxy substituents at β-thiophene carbons were synthesized and characterized. The X-ray structure was solved for tetrabutoxy substituted 21,23-dithiaporphyrin and it exhibited a more planar structure compared with unsubstituted S2TPP, whereas the dimethoxy substituted 21-monothiaporphyrin showed a saddle shaped structure similar to unsubstituted STPPH. A series of 21,23-dithia and 21-monothiaporphyrins having methoxy, butoxy, octyloxy and dodecyloxy substituents at β-thiophene carbons were synthesized and characterized.

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