213917-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213917-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,9,1 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 213917-82:
(8*2)+(7*1)+(6*3)+(5*9)+(4*1)+(3*7)+(2*8)+(1*2)=129
129 % 10 = 9
So 213917-82-9 is a valid CAS Registry Number.
213917-82-9Relevant academic research and scientific papers
Synthesis of chiral epoxyalkynes
Kanger, Tonis,Niidas, Piret,Mueuerisepp, Aleksander-Mati,Pehk, Tonis,Lopp, Margus
, p. 2499 - 2508 (2007/10/03)
The synthesis of novel chiral propargylic epoxides ((R)-1-t- butyldimethylsilyl-3,4-epoxy-1-butyne, (3S,4S)-3,4-epoxy-1-octyne, (3R,4S)- 1-t-butyldimethylsilyl-3,4-epoxy-1-pentyne) has been developed starting from the readily available tartaric acid deriv
