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72621-64-8

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72621-64-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72621-64-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,2 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 72621-64:
(7*7)+(6*2)+(5*6)+(4*2)+(3*1)+(2*6)+(1*4)=118
118 % 10 = 8
So 72621-64-8 is a valid CAS Registry Number.

72621-64-8Relevant articles and documents

Insight into the mechanism of 3,3′-dimethyl-4,4′-diaminodiphenylmethane synthesis over Hβ zeolite

Yang, Yingkuo,Zhao, Yingxian,Shao, Jianhua,Zhang, Shengjian,Yang, Rongqiang

, p. 95 - 106 (2015/02/18)

Heterogeneous synthesis of 3,3′-dimethyl-4,4′-diaminodiphenylmethane (MDT) from o-tolylamine and formaldehyde on acidic zeolites HY, HZSM-5, Hβ and TS-1 was investigated. Hβ zeolite with strong Bronsted acidity and proper textural property demonstrated be

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