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177768-48-8

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177768-48-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177768-48-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,7,6 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 177768-48:
(8*1)+(7*7)+(6*7)+(5*7)+(4*6)+(3*8)+(2*4)+(1*8)=198
198 % 10 = 8
So 177768-48-8 is a valid CAS Registry Number.

177768-48-8Downstream Products

177768-48-8Relevant articles and documents

Regio- and stereoselective reactions of 17-phenyl-18,19,20-trinorprostaglandin F2α isopropyl ester

Liljebris, Charlotta,Nilsson, Bj?rn M.,Resul, Bahram,Hacksell, Uli

, p. 4028 - 4034 (2007/10/03)

Novel prostaglandin F2α derivatives, functionalized at C13 and C14, have been prepared. 17-Phenyl-18,19,20-trinorprostaglandin F2α isopropyl ester [(15S)-1] and its epimer [(15A)-1] were stereoselectively epoxidized, using Sharpless conditions, to produce each of the four diastereomeric epoxides (15S)-2, (15S)-3, (15R)-2, and (15R)-3. Treatment of the four epoxides with LiOH stereospecifically-produced the pentahydroxy substituted analogues 12 and 13. Alternatively, epoxides 2 and 3 were allowed to react with thiophenolate ion. The attack of the sulfur nucleophile on the epoxide occurred at either C13 or C14 depending on the stereochemistry of the epoxide and of C15.

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