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179939-65-2

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179939-65-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 179939-65-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,9,3 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 179939-65:
(8*1)+(7*7)+(6*9)+(5*9)+(4*3)+(3*9)+(2*6)+(1*5)=212
212 % 10 = 2
So 179939-65-2 is a valid CAS Registry Number.

179939-65-2Relevant articles and documents

Stereoselectivity and conformational control in the synthesis of ajmaline and epi-ajmaline alkaloids

Bailey, Patrick D.,Beard, Mark A.,Cresswell, Mark,Dang, Hoa P.T.,Pathak, Ravindra B.,Phillips, Theresa R.,Price, Richard A.

, p. 1726 - 1729 (2013/04/24)

Careful choice of the N-protecting group provides crucial conformational control, allowing ring-closure to the indole 3-position in the late stages of the synthesis of ajmaline alkaloids; the choice of protecting group and reducing agent can also provide access to either the natural or epi configuration at the indole 2-position.

A total asymmetric synthesis of (-)-suaveoline

Bailey, Patrick D.,Morgan, Keith M.

, p. 1479 - 1480 (2007/10/03)

A new total synthesis of (-)-suaveoline from L-tryptophan is reported (overall yield ca. 14%); key steps include a high yielding cis-specific Pictet-Spengler reaction, a one-pot Horner-Wadsworth-Emmons/alkylation procedure, a vinylogous Thorpe cyclization

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