142109-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142109-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,1,0 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142109-07:
(8*1)+(7*4)+(6*2)+(5*1)+(4*0)+(3*9)+(2*0)+(1*7)=87
87 % 10 = 7
So 142109-07-7 is a valid CAS Registry Number.
142109-07-7Relevant academic research and scientific papers
First synthesis of 5,6,7,8-tetrahydro-8-deaza-8-thiafolic acid
Sako,Totani,Hirota,Maki
, p. 49 - 52 (2007/10/02)
5,6,7,8-Tetrahydro-8-deaza-8-thiafolic acid (3) was synthesized as a diastereoisomeric mixture via thermal condensation of 5-hydroxyisocytosine (6) with diethyl N-[p-(2-amino-3-mercaptopropyl)aminobenzoyl]glutamate (10) after activation of the C(6)-positi
