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129974-80-7

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129974-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129974-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,7 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129974-80:
(8*1)+(7*2)+(6*9)+(5*9)+(4*7)+(3*4)+(2*8)+(1*0)=177
177 % 10 = 7
So 129974-80-7 is a valid CAS Registry Number.

129974-80-7Relevant articles and documents

ENZYMATIC RECOGNITION OF DIASTEREOMERIC ESTERS

Rabiller, C. G.,Koenigsberger, .,Faber, K.,Griengl, H.

, p. 4231 - 4240 (2007/10/02)

Aiming to improve the enantioselectivity of enzymatic resolution of esters, lipase catalyzed hydrolysis of (D)- and (L)-2-chloropropanoates of four racemic alcohols and transesterification of ethyl (DL)-2-chloropropanoate with optically pure alcohols was investigated.Thus, (rac)-endo-2-norbornyl (L)-2-chloropropanoate was hydrolized by lipase P about 5 times more selectively than its corresponding (D)-counterpart and optically pure (1R,2S,5R)-menthol was obtained by transesterification of its racemate with ethyl (D)-2-chloropropanoate using Candida cylindracea (CC)lipase.From the results obtained it seems obvious that lipases CC and P mainly can recognize the chirality of an alcohol moiety rather than that of an acid

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