81850-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81850-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,5 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81850-44:
(7*8)+(6*1)+(5*8)+(4*5)+(3*0)+(2*4)+(1*4)=134
134 % 10 = 4
So 81850-44-4 is a valid CAS Registry Number.
81850-44-4Relevant articles and documents
SYNTHESIS OF PERFLUORO-2-ALKYNENITRILES
Huang, Y. Z.,Shen, Yanchang,Ding, Weiyu,Zheng, Jianhua
, p. 5283 - 5284 (1981)
Intramolecular Wittig reaction has been applied to the synthesis of perfluoro-2-alkynenitriles (4a, b, c).