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139640-08-7

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139640-08-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139640-08-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,4 and 0 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139640-08:
(8*1)+(7*3)+(6*9)+(5*6)+(4*4)+(3*0)+(2*0)+(1*8)=137
137 % 10 = 7
So 139640-08-7 is a valid CAS Registry Number.

139640-08-7Relevant articles and documents

Regioselective functionalization of unprotected myo-inositol by electrophilic substitution

Watanabe, Yutaka,Uemura, Tsuyoshi,Yamauchi, Satoe,Tomita, Kousei,Saeki, Takafumi,Ishida, Ryousuke,Hayashi, Minoru

, p. 4657 - 4664 (2013/06/26)

Unprotected myo-inositol was treated with various electrophiles, such as aroyl chlorides, tosyl chloride and tert-butyldiphenylsilyl chloride in a solution of LiCl/DMA or DMSO to afford regioselectively 1,3-di-O-substituted or racemic 1-O-substituted deri

Synthesis of D-erythro-sphingomyelin and of D-erythro-ceramide-1-phosphoinositol

Kratzer, Bernd,Mayer, Thomas G.,Schmidt, Richard R.

, p. 6881 - 6884 (2007/10/02)

3-O-Silyl-protected azidosphingosine 3, readily available from D-erythro-azidosphingosine, is transformed into ceramidyl phosphite derivative 5 which is a versatile building block for the synthesis of ceramide-1-O-phosphate and derivatives. This is exhibited for the synthesis of the title compounds 1 and 2.

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