Cas 249920-60-3,Zn(C5N)4H4(C6H3(C(CH3)3)2)4(N2HCC6H4C2H)2

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Check Digit Verification of cas no

The CAS Registry Mumber 249920-60-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,9,2 and 0 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 249920-60:
(8*2)+(7*4)+(6*9)+(5*9)+(4*2)+(3*0)+(2*6)+(1*0)=163
163 % 10 = 3
So 249920-60-3 is a valid CAS Registry Number.

249920-60-3Upstream product

249920-59-0 Zn(C₅N)4H₄(C₆H₃(C(CH₃)3)2)4(N₂HCC₆H₄C₂Si(CH₃)3)2

249920-60-3Downstream Products

249920-60-3Relevant academic research and scientific papers

Fused porphyrin-imidazole systems: New building blocks for synthesis of porphyrin arrays

Crossley, Maxwell J.,McDonald, James A.

, p. 2429 - 2431 (1999)

Reaction of porphyrin-2,3-diones with aromatic aldehydes and NH4OAc in AcOH-CHCl3 affords 2-aryl-1H-imidazo-[4,5-b]porphyrins which, with appropriate substitution, are useful building blocks for the synthesis of multi-porphyrin arrays; porphyrin-tetraones are similarly converted into the corresponding bis-fused systems.

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