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87660-03-5

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87660-03-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87660-03-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,6 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87660-03:
(7*8)+(6*7)+(5*6)+(4*6)+(3*0)+(2*0)+(1*3)=155
155 % 10 = 5
So 87660-03-5 is a valid CAS Registry Number.

87660-03-5Relevant articles and documents

The Synthesis of Benzophenathrothiophenes and Anthrabenzothiophenes

Tedjamulia, Marvin L.,Tominaga, Yoshinori,Castle, Raymond N.,Lee, Milton L.

, p. 861 - 866 (2007/10/02)

The synthesis of benzophenanthrothiophene (5), benzophenanthrothiophene (6), benzophenanthrothiophene (9), benzophenanthrothiophene (14a), anthrabenzothiophene (24), anthrabenzothiophene (29) and anthrabenzothiophene (30) is described as well as the preparation of 13-methylbenzophenanthrothiophene (14b).

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