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84089-87-2

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84089-87-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84089-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,0,8 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 84089-87:
(7*8)+(6*4)+(5*0)+(4*8)+(3*9)+(2*8)+(1*7)=162
162 % 10 = 2
So 84089-87-2 is a valid CAS Registry Number.

84089-87-2Relevant articles and documents

Chemistry of Pyrrolic Compounds. LI. Porphyrins with Electron-Withdrawing Groups in the Same Pyrrolic Ring: Preparation of a Pyridazinoporphyrin

Chaudhry, Irshad A.,Clezy, Peter S.

, p. 1185 - 1201 (2007/10/02)

The preparation and properties of porphyrins bearing electron-withdrawing groups in the same pyrrolic ring are described.The principal example studied is a diformylporphyrin and this has been used to prepare a porphyrin containing a fused pyridazine ring.The properties of this novel system are discussed.

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