177212-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177212-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,2,1 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 177212-18:
(8*1)+(7*7)+(6*7)+(5*2)+(4*1)+(3*2)+(2*1)+(1*8)=129
129 % 10 = 9
So 177212-18-9 is a valid CAS Registry Number.
177212-18-9Relevant academic research and scientific papers
Total synthesis of calyculin A-Construction of the C(9)-C(37) fragment
Yokokawa, Fumiaki,Hamada, Yasumasa,Shioiri, Takayuki
, p. 871 - 872 (2007/10/03)
The potent protein phosphatase inhibitor calyculin A is formally synthesized via construction of the C(9)-C(37) fragment 2 by a Wittig reaction of the C(9)-C(25) spiroketal fragment with the C(26)-C(37) phosphonium salt.
