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66154-82-3

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66154-82-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66154-82-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,1,5 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 66154-82:
(7*6)+(6*6)+(5*1)+(4*5)+(3*4)+(2*8)+(1*2)=133
133 % 10 = 3
So 66154-82-3 is a valid CAS Registry Number.

66154-82-3Downstream Products

66154-82-3Relevant articles and documents

The Chemistry of Pyrrolic Compounds. XLV. Haematoporphyrin Derivative: Haematoporphyrin Diacetate as the Main Product of the Reaction of Haematoporphyrin with a Mixture of Acetic and Sulfuric Acids

Clezy, Peter S.,Hai, Ton That,Henderson, Robert W.,Thuc, Le van

, p. 585 - 597 (2007/10/02)

A mixture of acetic and sulfuric acids converts haematoporphyrin into a complex mixture of porphyrins of which the main product has been characterized as the diacetate (1g).Other compounds identified in the reaction mixture were the known vinylporphyrins (1b-d), (1h) and (1i) and the isomeric monoacetoxyethyl(monohydroxyethyl)porphyrins (1l) and (1m).Analysis of the reaction mixture was complicated by the presence of 1'-ethoxyethyl derivatives (1e) or (1f), (1j) and (1k) which presumably arose by solvolysis of the corresponding acetate with ethanol present in the chloroform used for the the chromatographic separation.

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