67565-52-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67565-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,5,6 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 67565-52:
(7*6)+(6*7)+(5*5)+(4*6)+(3*5)+(2*5)+(1*2)=160
160 % 10 = 0
So 67565-52-0 is a valid CAS Registry Number.
67565-52-0Relevant articles and documents
Penicillin G sulfoxide diphenyl methyl ester synthesis method
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Paragraph 0027-0029, (2020/03/12)
The invention discloses a penicillin G sulfoxide diphenyl methyl ester synthesis method, which comprises: esterifying a penicillin G potassium salt as an initial raw material, and oxidizing through 2KHSO5.KHSO4.K2SO4 to synthesize the penicillin G sulfoxi