72229-32-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72229-32-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,2,2 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 72229-32:
(7*7)+(6*2)+(5*2)+(4*2)+(3*9)+(2*3)+(1*2)=114
114 % 10 = 4
So 72229-32-4 is a valid CAS Registry Number.
72229-32-4Relevant articles and documents
New and concise approach to (R)-α-lipoic acid
Wei, Zhen,Lan, Hong-Qiao,Zheng, Jian-Feng,Huang, Pei-Qiang
experimental part, p. 691 - 701 (2009/07/18)
A concise enantiospecific synthesis of (S)-6,8-bis(methylsulfonyloxy)- octanoic acid (2), a ready precursor of (R)-(+)-α-lipoic acid (1), is reported. The key step of the synthesis is the coupling of the tosylate derived from (R)-malic acid with phenylpro
