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4950-33-8

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4950-33-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4950-33-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,5 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4950-33:
(6*4)+(5*9)+(4*5)+(3*0)+(2*3)+(1*3)=98
98 % 10 = 8
So 4950-33-8 is a valid CAS Registry Number.

4950-33-8Downstream Products

4950-33-8Relevant articles and documents

One-pot synthesis of dibenzofuran-1,4-diones

Takeya, Tetsuya,Kondo, Hiromu,Tomita, Kazuho,Okamoto, Iwao,Morita, Nobuyoshi,Tamura, Osamu

, p. 961 - 968 (2008/09/19)

One-pot synthesis of dibenzofuran- 1,4-diones 8 from 4-methoxyphenols (or 4-methoxy-1-naphthols) 4 was achieved by oxidative dimerization over a semiconductor in heated, O2-saturated toluene, followed by selective monodemethylation, and oxidati

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