158773-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158773-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,7,7 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 158773-71:
(8*1)+(7*5)+(6*8)+(5*7)+(4*7)+(3*3)+(2*7)+(1*1)=178
178 % 10 = 8
So 158773-71-8 is a valid CAS Registry Number.
158773-71-8Relevant articles and documents
Synthesis of 2-chloromethyl-5-aryl-, 2-chloromethyl-5-(5-methyl-2-furyl)-, and 2-chloromethyl-5-(1,5-dimethyl-2-pyrrolyl)-1,3,4-oxadiazoles from tetrazole derivatives
Baranov,Tsypin,Malin,Laskin
, p. 773 - 775 (2007/10/03)
Acetylation of 5-aryltetrazoles, 5-(5-methyl-2-furyl)tetrazole, and 5-(1,5-dimethyl-2-pyrrolyl)tetrazole with chloroacetyl chloride was studied.