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944936-30-5

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944936-30-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 944936-30-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,4,9,3 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 944936-30:
(8*9)+(7*4)+(6*4)+(5*9)+(4*3)+(3*6)+(2*3)+(1*0)=205
205 % 10 = 5
So 944936-30-5 is a valid CAS Registry Number.

944936-30-5Relevant articles and documents

Synthetic studies on coenzyme Q10: Part 31) - An improved C5 + C45 approach to the stereoselective synthesis of coenzyme Q10 via metal-halogen exchange strategy

Yu, Xiong-Jie,Dai, Hui-Fang,Chen, Fen-Er

, p. 967 - 971 (2008/02/04)

An efficient and stereoselective approach to the synthesis of coenzyme Q10 is described (Scheme). The MeOCH2-protected p-hydroquinone 4 containing the C5 (E)-allyl (tert-butyl) dimethylsilyl ether moiety was obtained via a halogen-lithium exchange of the MeOCH2-proctected 2-bromo-5,6-dimethoxy-3-methylhydroquinone 2 and subsequent addition to (E)-(tBuMe2Si)-OCH 2C(Me)= CHCH2Br (3). The reductive desulfonylation of compound 8, obtained from 4 via 5-7, was successfully carried out by employing Li/EtNH2.

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