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69520-85-0

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69520-85-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69520-85-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,5,2 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 69520-85:
(7*6)+(6*9)+(5*5)+(4*2)+(3*0)+(2*8)+(1*5)=150
150 % 10 = 0
So 69520-85-0 is a valid CAS Registry Number.

69520-85-0Relevant articles and documents

Synthesis of 3,7-disubstituted 10-methylphenothiazines

Ebdrup, S?ren

, p. 1107 - 1109 (2007/10/03)

Lithiation at the C-3 and C-7 positions of N-methylphenothiazine (1) can be achieved by halogen metal exchange reaction starting from 3,7-dibromo-10-methylphenothiazine (2). Reaction of the lithiated species with carbon, sulfur and silicon electrophiles results in new 3,7-disubstituted 10-methylphenothiazines 4a-g. The described procedure gives high yield and an easy excess to important enzyme mediators.

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