212757-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212757-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,7,5 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 212757-54:
(8*2)+(7*1)+(6*2)+(5*7)+(4*5)+(3*7)+(2*5)+(1*4)=125
125 % 10 = 5
So 212757-54-5 is a valid CAS Registry Number.
212757-54-5Relevant articles and documents
Synthesis of both enantiomers of hiburipyranone
Uchida, Kanako,Watanabe, Hidenori,Kitahara, Takeshi
, p. 8975 - 8984 (2007/10/03)
Both enentiomers of hiburipyranone, a cytotoxic metabolite of marine sponge, was synthesized employing Sharpless' asymmetric dihydroxylation as a key step and absolute configuration of the natural compound at C-3 position was determined to be R.
