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189245-01-0

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189245-01-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189245-01-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,2,4 and 5 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 189245-01:
(8*1)+(7*8)+(6*9)+(5*2)+(4*4)+(3*5)+(2*0)+(1*1)=160
160 % 10 = 0
So 189245-01-0 is a valid CAS Registry Number.

189245-01-0Relevant articles and documents

Efficient synthesis of (S)-(-)- and (R)-(+)-enantiomers of 15-deoxyspergualin (15-DSG)

Wang, Xuebao,Thottathil, John

, p. 3665 - 3669 (2007/10/03)

An efficient synthesis of the (S)-(-)- and (R)-(+)-enantiomers of 15-deoxyspergualin (15-DSG) is reported. The synthesis involves preparative HPLC separation and subsequent hydrogenolysis of two diastereoisomers 10a and 10b of fully protected 15-DSG penultimates. Alternatively, diastereomerically pure amide 10b (97% de) was also prepared from acid 8b (97% de), which was obtained via crystallization of a 1:1 diastereomeric mixture of 8a and 8b. Copyright (C) 2000 Elsevier Science Ltd.

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