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135743-80-5

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135743-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135743-80-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,7,4 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 135743-80:
(8*1)+(7*3)+(6*5)+(5*7)+(4*4)+(3*3)+(2*8)+(1*0)=135
135 % 10 = 5
So 135743-80-5 is a valid CAS Registry Number.

135743-80-5Upstream product

135743-80-5Relevant articles and documents

Efficient conversion of aucubin into 6-epi-aucubin

Cachet, Xavier,Deguin, Brigitte,Koch, Michel,Makhlouf, Kader,Tillequin, Francois

, p. 400 - 402 (1999)

Selective deprotection of peracetylaucubin (3) by use of KCN led to 6- O-acetylaucubin (4), which was readily converted into 2',3',4',6',10-penta- O-benzoylaucubin (7). Configuration inversion performed on 7, using a modified Mitsunobu reaction, followed by deprotection, afforded 6-epi- aucubin (2).

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