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87264-54-8

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87264-54-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87264-54-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,6 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87264-54:
(7*8)+(6*7)+(5*2)+(4*6)+(3*4)+(2*5)+(1*4)=158
158 % 10 = 8
So 87264-54-8 is a valid CAS Registry Number.

87264-54-8Upstream product

87264-54-8Relevant articles and documents

Pyrolysis and Photolysis of the N-Oxides of Protopines and Hexahydrobenzophenanthridines. Syntheses of the Secoberbines and Benzophenanthridines

Iwasa, Kinuko,Sugiura, Makiko,Takao, Narao

, p. 998 - 1008 (2007/10/02)

Pyrolysis and photolysis of the N-oxides of the protopines 9 and 16 produces the ring-enlarged compounds 10 and 17, whose reduction with zinc in acetic acid leads to the secoberbines (+/-)-corydalisol (11) and (+/-)-hypecorine (12) from 9, and the corresponding analogs (18 and 19) from 16.Pyrolysis of (+)-chelidonine N-oxide (24) generates dihydrosanguinarine (22).Keywords - pyrolysis; photolysis; N-oxide; protopine; sanguinarine; corydalisol; hypecorine

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